The forces of the `` Provisional Government '' ( which became the Free State in December 1922 ) supported the Treaty , while the Republican opposition saw it as a betrayal of the Irish Republic ( which had been proclaimed during the Easter Rising ) .
The forces of the `` Provisional Government '' ( which became the Free State in December 1922 ) supported the Treaty . The Republican opposition saw it as a betrayal of the Irish Republic ( which had been proclaimed during the Easter Rising ) .