diff --git a/src/App.jsx b/src/App.jsx
index 5ff7a1e..e335685 100644
--- a/src/App.jsx
+++ b/src/App.jsx
@@ -1,7 +1,13 @@
 import { useState } from "react";
 import FileManager from "./File Manager/FileManager";
+import { createFolderAPI } from "./Mock APIs/createFolderAPI";
+import { renameAPI } from "./Mock APIs/renameAPI";
+import { deleteAPI } from "./Mock APIs/deleteAPI";
+import { fileTransferAPI } from "./Mock APIs/fileTransferAPI";
+import { refreshAPI } from "./Mock APIs/refreshAPI";
 
 function App() {
+  const [isLoading, setIsLoading] = useState(false);
   const [files, setFiles] = useState([
     {
       name: "DCIM",
@@ -24,130 +30,48 @@ function App() {
       path: "",
     },
   ]);
-  const [isLoading, setIsLoading] = useState(false);
 
   // Create Folder
-  const handleCreateFolder = (folderName, currentPath) => {
-    setFiles((prev) => {
-      return [
-        ...prev,
-        {
-          name: folderName,
-          path: currentPath,
-          isDirectory: true,
-        },
-      ];
-    });
+  const handleCreateFolder = async (files, folderName, folderPath) => {
+    setIsLoading(true);
+    const responseFiles = await createFolderAPI(files, folderName, folderPath);
+    setFiles(responseFiles);
+    setIsLoading(false);
   };
   //
 
   // Rename File/Folder
-  const handleRename = (selectedFile, newName) => {
-    setFiles((prev) => {
-      return prev.map((file) => {
-        if (file.name === selectedFile?.name && file.path === selectedFile?.path) {
-          return {
-            // Rename the file itself
-            ...file,
-            name: newName,
-          };
-        } else if (file.path.startsWith(selectedFile.path + "/" + selectedFile.name)) {
-          // Path update for all files in the folder
-          const basePath = selectedFile.path + "/" + selectedFile.name;
-          const newBasePath = basePath.split("/").slice(0, -1).join("/") + "/" + newName;
-          const newPath = newBasePath + file.path.slice(basePath.length);
-          return {
-            ...file,
-            path: newPath,
-          };
-        } else {
-          return file;
-        }
-      });
-    });
+  const handleRename = async (files, selectedFile, newName) => {
+    setIsLoading(true);
+    const response = await renameAPI(files, selectedFile, newName);
+    setFiles(response);
+    setIsLoading(false);
   };
   //
 
   // Delete File/Folder
-  const handleDelete = (file) => {
-    if (file.isDirectory) {
-      setFiles((prev) => {
-        return prev.filter((f) => {
-          const folderToDelete = f.path === file.path && f.name === file.name;
-          const folderChildren = f.path.startsWith(file.path + "/" + file.name);
-          return !folderToDelete && !folderChildren;
-        });
-      });
-    } else {
-      setFiles((prev) => {
-        return prev.filter((f) => !(f.name === file.name && f.path === file.path));
-      });
-    }
+  const handleDelete = async (files, file) => {
+    setIsLoading(true);
+    const response = await deleteAPI(files, file);
+    setFiles(response);
+    setIsLoading(false);
   };
   //
 
   // Paste File/Folder
-  const getCopiedFiles = (file, pastePath) => {
-    const children = file.children ?? [];
-    return [
-      { name: file.name, isDirectory: file.isDirectory, path: pastePath },
-      ...children.flatMap((child) => getCopiedFiles(child, pastePath + "/" + file.name)),
-    ];
-  };
-
-  const handleDuplicateFile = (file, pastePath, pastePathFiles) => {
-    if (file.path === pastePath || pastePathFiles.find((f) => f.name === file.name)) {
-      const fileExtension = file.isDirectory ? "" : "." + file.name.split(".").pop();
-      const fileName = file.isDirectory ? file.name : file.name.split(".").slice(0, -1).join(".");
-
-      // Generating new file name for duplicate file
-      let maxFileNum = 0;
-      // If there exists a file with name fileName (1), fileName (2), etc.
-      // Check if the number is greater than the maxFileNum, then set it to that greater number
-      const fileNameRegex = new RegExp(`${fileName} \\(\\d+\\)`);
-      pastePathFiles.forEach((f) => {
-        const fName = f.isDirectory ? f.name : f.name.split(".").slice(0, -1).join(".");
-        if (fileNameRegex.test(fName)) {
-          const fileNumStr = fName.split(`${fileName} (`).pop().slice(0, -1);
-          const fileNum = parseInt(fileNumStr);
-          if (!isNaN(fileNum) && fileNum > maxFileNum) {
-            maxFileNum = fileNum;
-          }
-        }
-      });
-      const appendNum = ` (${++maxFileNum})`;
-      const newFileName = fileName + appendNum + fileExtension;
-      //
-
-      return { ...file, name: newFileName };
-    } else {
-      return file;
-    }
-  };
-
-  const handlePaste = (pastePath, clipBoard, filesCopied) => {
-    setFiles((prevFiles) => {
-      if (clipBoard.isMoving) {
-        prevFiles = prevFiles.filter((f) => {
-          return !filesCopied.find((cf) => cf.name === f.name && cf.path === f.path);
-        });
-      }
-
-      return [
-        ...prevFiles,
-        ...clipBoard.files.flatMap((file) => {
-          const pastePathFiles = prevFiles.filter((f) => f.path === pastePath);
-          const nonDuplicateFile = handleDuplicateFile(file, pastePath, pastePathFiles);
-          return getCopiedFiles(nonDuplicateFile, pastePath);
-        }),
-      ];
-    });
+  const handlePaste = async (files, pastePath, clipBoard, filesCopied) => {
+    setIsLoading(true);
+    const response = await fileTransferAPI(files, pastePath, clipBoard, filesCopied);
+    setFiles(response);
+    setIsLoading(false);
   };
   //
 
   // Refresh Files
-  const handleRefresh = () => {
-    // Refresh Files API call here...
+  const handleRefresh = async () => {
+    setIsLoading(true);
+    await refreshAPI();
+    setIsLoading(false);
   };
   //
 
diff --git a/src/File Manager/Actions/Actions.jsx b/src/File Manager/Actions/Actions.jsx
index e383298..a82f922 100644
--- a/src/File Manager/Actions/Actions.jsx	
+++ b/src/File Manager/Actions/Actions.jsx	
@@ -6,6 +6,7 @@ import DeleteAction from "./Delete.action";
 import UploadFileAction from "./UploadFile.action";
 
 const Actions = ({
+  files,
   triggerAction,
   currentPath,
   currentPathFiles,
@@ -24,6 +25,7 @@ const Actions = ({
       title: "Create Folder",
       component: (
         <CreateFolderAction
+          files={files}
           currentPath={currentPath}
           currentPathFiles={currentPathFiles}
           triggerAction={triggerAction}
@@ -41,6 +43,7 @@ const Actions = ({
       title: "Rename",
       component: (
         <RenameAction
+          files={files}
           selectedFile={selectedFile}
           currentPathFiles={currentPathFiles}
           triggerAction={triggerAction}
@@ -54,6 +57,7 @@ const Actions = ({
       title: "Delete",
       component: (
         <DeleteAction
+          files={files}
           selectedFile={selectedFile}
           triggerAction={triggerAction}
           handleDelete={handleDelete}
diff --git a/src/File Manager/Actions/CreateFolder.action.jsx b/src/File Manager/Actions/CreateFolder.action.jsx
index e7ddd53..7c76ac3 100644
--- a/src/File Manager/Actions/CreateFolder.action.jsx	
+++ b/src/File Manager/Actions/CreateFolder.action.jsx	
@@ -2,6 +2,7 @@ import { useEffect, useRef, useState } from "react";
 import Button from "../../components/Button/Button";
 
 const CreateFolderAction = ({
+  files,
   currentPath,
   currentPathFiles,
   handleCreateFolder,
@@ -45,7 +46,7 @@ const CreateFolderAction = ({
 
       if (!alreadyExists) {
         // Current path doesn't have the same folder name
-        handleCreateFolder(newFolderName, currentPath);
+        handleCreateFolder(files, newFolderName, currentPath);
         triggerAction.close();
       } else {
         setFolderErrorMessage(`A folder with the name "${newFolderName}" already exits.`);
diff --git a/src/File Manager/Actions/Delete.action.jsx b/src/File Manager/Actions/Delete.action.jsx
index 98c17f1..9ef5b3b 100644
--- a/src/File Manager/Actions/Delete.action.jsx	
+++ b/src/File Manager/Actions/Delete.action.jsx	
@@ -2,6 +2,7 @@ import React from "react";
 import Button from "../../components/Button/Button";
 
 const DeleteAction = ({
+  files,
   selectedFile,
   triggerAction,
   handleDelete,
@@ -9,7 +10,7 @@ const DeleteAction = ({
   setSelectedFile,
 }) => {
   const handleDeleting = (file) => {
-    handleDelete(file);
+    handleDelete(files, file);
     setIsItemSelection(false);
     setSelectedFile(null);
     triggerAction.close();
diff --git a/src/File Manager/Actions/Rename.action.jsx b/src/File Manager/Actions/Rename.action.jsx
index 7cffb04..2d48e6b 100644
--- a/src/File Manager/Actions/Rename.action.jsx	
+++ b/src/File Manager/Actions/Rename.action.jsx	
@@ -3,6 +3,7 @@ import Button from "../../components/Button/Button";
 import { IoWarningOutline } from "react-icons/io5";
 
 const RenameAction = ({
+  files,
   selectedFile,
   currentPathFiles,
   handleRename,
@@ -64,7 +65,7 @@ const RenameAction = ({
         return;
       }
     }
-    handleRename(selectedFile, renameFile);
+    handleRename(files, selectedFile, renameFile);
     setSelectedFile((prev) => ({ ...prev, name: renameFile }));
     triggerAction.close();
   };
diff --git a/src/File Manager/FileManager.jsx b/src/File Manager/FileManager.jsx
index 2fc7e59..fdae4da 100644
--- a/src/File Manager/FileManager.jsx	
+++ b/src/File Manager/FileManager.jsx	
@@ -117,6 +117,7 @@ const FileManager = ({
       </section>
 
       <Actions
+        files={files}
         currentPath={currentPath}
         currentPathFiles={currentPathFiles}
         selectedFile={selectedFile}
diff --git a/src/File Manager/Files/FileItem.jsx b/src/File Manager/Files/FileItem.jsx
index cea6e43..add27aa 100644
--- a/src/File Manager/Files/FileItem.jsx	
+++ b/src/File Manager/Files/FileItem.jsx	
@@ -1,13 +1,5 @@
 import { useEffect, useState } from "react";
-import {
-  FaRegFile,
-  FaRegFileImage,
-  FaRegFileLines,
-  FaRegFilePdf,
-  FaRegFileWord,
-  FaRegFolderOpen,
-  FaRegPaste,
-} from "react-icons/fa6";
+import { FaRegFile, FaRegFolderOpen, FaRegPaste } from "react-icons/fa6";
 import { PiFolderOpen } from "react-icons/pi";
 import { MdOutlineDelete } from "react-icons/md";
 import ContextMenu from "../../components/Context Menu/ContextMenu";
@@ -69,7 +61,7 @@ const FileItem = ({
         );
         return folderToCopy || folderChildren;
       });
-      handlePaste(pastePath, clipBoard, copiedFiles);
+      handlePaste(files, pastePath, clipBoard, copiedFiles);
       clipBoard.isMoving && setClipBoard(null);
       setIsItemSelection(false);
       setSelectedFile(null);
diff --git a/src/File Manager/Toolbar/Toolbar.jsx b/src/File Manager/Toolbar/Toolbar.jsx
index 2c13a86..4055ff6 100644
--- a/src/File Manager/Toolbar/Toolbar.jsx	
+++ b/src/File Manager/Toolbar/Toolbar.jsx	
@@ -57,7 +57,7 @@ const Toolbar = ({
   ];
 
   // Handle Pasting
-  const handlePasting = (pastePath, clipBoard) => {
+  const handlePasting = (files, pastePath, clipBoard) => {
     const selectedCopiedFile = clipBoard.files[0];
     const copiedFiles = files.filter((f) => {
       const folderToCopy = f.path === selectedCopiedFile.path && f.name === selectedCopiedFile.name;
@@ -67,7 +67,7 @@ const Toolbar = ({
       return folderToCopy || folderChildren;
     });
 
-    handlePaste(pastePath, clipBoard, copiedFiles);
+    handlePaste(files, pastePath, clipBoard, copiedFiles);
     clipBoard.isMoving && setClipBoard(null);
     setIsItemSelection(false);
     setSelectedFile(null);
@@ -80,14 +80,14 @@ const Toolbar = ({
           return {
             ...item,
             permission: !!clipBoard,
-            onClick: () => handlePasting(currentPath, clipBoard),
+            onClick: () => handlePasting(files, currentPath, clipBoard),
           };
         } else {
           return item;
         }
       });
     });
-  }, [clipBoard, currentPath]);
+  }, [clipBoard, currentPath, files]);
 
   // Handle Cut / Copy
   const handleCutCopy = (isMoving) => {
@@ -117,7 +117,7 @@ const Toolbar = ({
             {selectedFile.isDirectory ? (
               <button
                 className="item-action file-action"
-                onClick={() => handlePasting(pastePath, clipBoard)}
+                onClick={() => handlePasting(files, pastePath, clipBoard)}
                 disabled={!clipBoard}
               >
                 <FaRegPaste size={18} />
diff --git a/src/Mock APIs/createFolderAPI.js b/src/Mock APIs/createFolderAPI.js
new file mode 100644
index 0000000..b6c9046
--- /dev/null
+++ b/src/Mock APIs/createFolderAPI.js	
@@ -0,0 +1,14 @@
+export const createFolderAPI = (files, folderName, folderPath) => {
+  return new Promise((resolve) => {
+    setTimeout(() => {
+      resolve([
+        ...files,
+        {
+          name: folderName,
+          isDirectory: true,
+          path: folderPath,
+        },
+      ]);
+    }, 700);
+  });
+};
diff --git a/src/Mock APIs/deleteAPI.js b/src/Mock APIs/deleteAPI.js
new file mode 100644
index 0000000..7281f48
--- /dev/null
+++ b/src/Mock APIs/deleteAPI.js	
@@ -0,0 +1,18 @@
+export const deleteAPI = (files, file) => {
+  return new Promise((resolve) => {
+    setTimeout(() => {
+      let response;
+      if (file.isDirectory) {
+        response = files.filter((f) => {
+          const folderToDelete = f.path === file.path && f.name === file.name;
+          const folderChildren = f.path.startsWith(file.path + "/" + file.name);
+          return !folderToDelete && !folderChildren;
+        });
+      } else {
+        response = files.filter((f) => !(f.name === file.name && f.path === file.path));
+      }
+
+      resolve(response);
+    }, 700);
+  });
+};
diff --git a/src/Mock APIs/fileTransferAPI.js b/src/Mock APIs/fileTransferAPI.js
new file mode 100644
index 0000000..d0f0343
--- /dev/null
+++ b/src/Mock APIs/fileTransferAPI.js	
@@ -0,0 +1,60 @@
+const getCopiedFiles = (file, pastePath) => {
+  const children = file.children ?? [];
+  return [
+    { name: file.name, isDirectory: file.isDirectory, path: pastePath },
+    ...children.flatMap((child) => getCopiedFiles(child, pastePath + "/" + file.name)),
+  ];
+};
+
+const handleDuplicateFile = (file, pastePath, pastePathFiles) => {
+  if (file.path === pastePath || pastePathFiles.find((f) => f.name === file.name)) {
+    const fileExtension = file.isDirectory ? "" : "." + file.name.split(".").pop();
+    const fileName = file.isDirectory ? file.name : file.name.split(".").slice(0, -1).join(".");
+
+    // Generating new file name for duplicate file
+    let maxFileNum = 0;
+    // If there exists a file with name fileName (1), fileName (2), etc.
+    // Check if the number is greater than the maxFileNum, then set it to that greater number
+    const fileNameRegex = new RegExp(`${fileName} \\(\\d+\\)`);
+    pastePathFiles.forEach((f) => {
+      const fName = f.isDirectory ? f.name : f.name.split(".").slice(0, -1).join(".");
+      if (fileNameRegex.test(fName)) {
+        const fileNumStr = fName.split(`${fileName} (`).pop().slice(0, -1);
+        const fileNum = parseInt(fileNumStr);
+        if (!isNaN(fileNum) && fileNum > maxFileNum) {
+          maxFileNum = fileNum;
+        }
+      }
+    });
+    const appendNum = ` (${++maxFileNum})`;
+    const newFileName = fileName + appendNum + fileExtension;
+    //
+
+    return { ...file, name: newFileName };
+  } else {
+    return file;
+  }
+};
+
+export const fileTransferAPI = (files, pastePath, clipBoard, filesCopied) => {
+  return new Promise((resolve) => {
+    setTimeout(() => {
+      if (clipBoard.isMoving) {
+        files = files.filter((f) => {
+          return !filesCopied.find((cf) => cf.name === f.name && cf.path === f.path);
+        });
+      }
+
+      const response = [
+        ...files,
+        ...clipBoard.files.flatMap((file) => {
+          const pastePathFiles = files.filter((f) => f.path === pastePath);
+          const nonDuplicateFile = handleDuplicateFile(file, pastePath, pastePathFiles);
+          return getCopiedFiles(nonDuplicateFile, pastePath);
+        }),
+      ];
+
+      resolve(response);
+    }, 700);
+  });
+};
diff --git a/src/Mock APIs/refreshAPI.js b/src/Mock APIs/refreshAPI.js
new file mode 100644
index 0000000..601333c
--- /dev/null
+++ b/src/Mock APIs/refreshAPI.js	
@@ -0,0 +1,3 @@
+export const refreshAPI = () => {
+  return new Promise((resolve) => setTimeout(resolve, 700));
+};
diff --git a/src/Mock APIs/renameAPI.js b/src/Mock APIs/renameAPI.js
new file mode 100644
index 0000000..65ff3ae
--- /dev/null
+++ b/src/Mock APIs/renameAPI.js	
@@ -0,0 +1,28 @@
+export const renameAPI = (files, selectedFile, newName) => {
+  return new Promise((resolve) => {
+    setTimeout(() => {
+      const response = files.map((file) => {
+        if (file.name === selectedFile.name && file.path === selectedFile.path) {
+          return {
+            // Rename the file itself
+            ...file,
+            name: newName,
+          };
+        } else if (file.path.startsWith(selectedFile.path + "/" + selectedFile.name)) {
+          // Path update for all files in the folder
+          const basePath = selectedFile.path + "/" + selectedFile.name;
+          const newBasePath = basePath.split("/").slice(0, -1).join("/") + "/" + newName;
+          const newPath = newBasePath + file.path.slice(basePath.length);
+          return {
+            ...file,
+            path: newPath,
+          };
+        } else {
+          return file;
+        }
+      });
+
+      resolve(response);
+    }, 700);
+  });
+};