Bulgaria's troops invaded Greece and Yugoslavia just after the governments of those countries surrendered. Bulgaria occupied the lands of modern North Macedonia and parts of Greece. (Both areas had been part of Bulgaria before the Balkan Wars.) The Bulgarian government also sent Jews to concentration camps and ghettoes in the Holocaust. The king of Bulgaria, Tsar Boris III, died after talking to Hitler in August 1943. Before the Tsar died, the Kingdom of Bulgaria had sent at least 11,343 Jews to the extermination camps.