 They did agree to a forced population exchange between Czechoslovakia and Hungary, one which was initially rejected by Hungary.This population exchange proceeded by an agreement whereby 55,400 to 89,700 Hungarians from Slovakia were exchanged for 60,000 to 73,200 Slovaks from Hungary (the exact numbers depend on the source).Slovaks leaving Hungary moved voluntarily, but Czechoslovakia forced Hungarians out of their nation.