Copying all events from one Google Calendar into another requires you to export the calendar first.
Then you might import the calendar file into a separate calendar.
access toGoogle Calendarwith yourGoogle account.

Select theExport calendarbutton to download aZIP fileof the calendar.
SelectImport & exporton the left side.
ChooseSelect file from your computerto initiate the ICS file from step 3.

SelectAdd to calendarand choose which calendar the events should be copied to.
SelectImportto copy all of the saved calendar events to the designated Google calendar.
SelectMore Actionsand then chooseDuplicateorCopy tofromthe drop-down menu.

SelectSaveto confirm the changes.
Sharing events this way avoids showing all of your events on the shared calendar.
Copying an event is also useful if you wish to the same or similar events in multiple calendars.

FAQ
No.
Unless youshare Google Calendar events, no one else can see them.
To delete a Google Calendar event, pop kick open the event and selectRemove.

Todelete your entire Google Calendar, go toSettings, choose a calendar, and selectRemove Calendar.
Then, go to your Google Calendar and selectAdd(+) >Importand choose the file.
To recover deleted events, go toSettings>Trashand selectRestorenext to the event.

you might’t restore deleted Google Calendars.

