concentration camps built by nazis in 1933 initially held\n○ jehovahs witnesses.\n○ roma people.\n○…

Brief Explanations:

In 1933, when the Nazis began building concentration - camps, they initially held political prisoners. These were individuals who opposed the Nazi regime or were seen as a threat to its power. Jehovah's Witnesses, Roma people, and prisoners of war were also victims of the Nazi concentration - camps but not the initial group.

Answer:

political prisoners.