Remind me which ethnicities were those? Also what was the relationship between members of those ethnicities and Nazis? Here's something to jog your memory ht

Remind me which ethnicities were those? Also what was the relationship between members of those ethnicities and Nazis? Here's something to jog your memory https://en.wikipedia.org/wiki/1938_German_parliamentary_election_and_referendum#Sudetenland https://en.wikipedia.org/wiki/1938_German_parliamentary_elec...