What was the name of the inhabitants for the northern, southern, and western areas of former Czechoslovakia where  a German composerknown by his Czech name Jan Josef Abert  is from? 
Sudetenland: The Sudetenland ( ; ] ; Czech and Slovak: "Sudety" ; Polish: "Kraj Sudecki" ) is the name for the northern, southern, and western areas of former Czechoslovakia which were inhabited primarily by Sudeten Germans.
i don't know