 Complete the following phrase:  Following the victory in WWI Serbs subsequently formed the Kingdom of Serbs, Croats and Slovenes with other South Slavic peoples. The country was later renamed the Kingdom of Yugoslavia, and was led from 1921 to 1934 by King Alexander I of the Serbian Karađorđević dynasty. During World War II, Yugoslavia was invaded by the Axis powers in April 1941. The country was subsequently divided into many pieces, with Serbia being directly occupied by the Germans. Serbs in the Independent State of Croatia NDH were targeted for extermination as part of 