Combine worksheets from several workbooks into one

Sub CombineSheetsFromAllFilesInADirectory()
     
    Dim Path As String 'string  variable to hold the path to look through
    Dim FileName As String 'temporary filename string variable
    Dim tWB As Workbook 'temporary workbook (each in directory)
    Dim tWS As Worksheet  'temporary worksheet variable
    Dim mWB As Workbook 'master workbook
    Dim aWS As Worksheet 'active sheet in master workbook
    Dim RowCount As Long 'Rows used on master sheet
    Dim uRange As Range  'usedrange for each temporary sheet
     
     '***** Set folder to cycle through *****
    Path = "c:\" 'Change as needed
     
    Application.EnableEvents = False 'turn off  events
    Application.ScreenUpdating = False  'turn off screen updating
    Set mWB = Workbooks.Add(1) 'create a new one-worksheet workbook
    Set aWS = mWB.ActiveSheet 'set active sheet variable to only sheet in mWB
    If Right(Path, 1) <> Application.PathSeparator Then 'if path doesnt end in ""
        Path = Path & Application.PathSeparator 'add ""
    End If
    FileName = Dir(Path & "*.xls", vbNormal) 'set first file's name to filename variable
    Do Until FileName = "" ' loop until all files have been parsed
        Set tWB = Workbooks.Open(FileName:=Path & FileName) 'open file, set to tWB variable
        For Each tWS In tWB.Worksheets 'loop through each sheet
            Set uRange = tWS.Range("A1", tWS.Cells(tWS.UsedRange.Row + tWS.UsedRange.Rows _
            .Count - 1, tWS.UsedRange.Column + tWS.UsedRange.Columns.Count - 1)) 'set used range
            If RowCount + uRange.Rows.Count > 65536 Then 'if the used range wont fit on the sheet
                aWS.Columns.AutoFit 'autofit mostly-used worksheet's columns
                Set aWS = mWB.Sheets.Add(After:=aWS) 'add a new sheet that will accommodate data
                RowCount = 0 'reset RowCount variable
            End If
            If RowCount = 0 Then 'if working with a new sheet
                aWS.Range("A1", aWS.Cells(1, uRange.Columns.Count)).Value = _
                tWS.Range("A1", tWS.Cells(1, uRange.Columns.Count)).Value 'copy  headers from tWS
                RowCount = 1 'add one to rowcount
            End If
            aWS.Range("A" & RowCount + 1).Resize(uRange.Rows.Count, uRange.Columns.Count).Value _
            = uRange.Value 'move data from temp sheet to data sheet
            RowCount = RowCount + uRange.Rows.Count 'increase rowcount accordingly
        Next 'tWS
        tWB.Close False 'close temporary workbook without  saving
        FileName = Dir() 'set next file's name to FileName variable
    Loop
    aWS.Columns.AutoFit 'autofit columns on last data sheet
    mWB.Sheets(1).Select 'select first data sheet on master workbook
    Application.EnableEvents = True 're-enable events
    Application.ScreenUpdating = True 'turn screen updating back on
End Sub