What purpose did the ghettos serve during the Holocaust? They were barracks where poor and sick people in Germany were sent to live.
They were living compounds built by the Nazis to house and kill Jewish people.
They were camps where socialists and political prisoners were forced to be laborers.
They were holding centers where Jewish people lived until they were sent to concentration camps.

D-They were holding centers where Jewish people lived until they were sent to concentration camps.

Explanation:

During the Holocaust, the creation of ghettos was a key step in the Nazi process of brutally separating, persecuting, and ultimately destroying Europe's Jews. Jews were forced to move into the ghettos, where living conditions were miserable. Ghettos were often enclosed districts that isolated Jews from the non-Jewish population and from other Jewish communities.

the effect of the ming leaders banning ships with more than two masts was that there was no further construction of ships masts, because there was a surplus. ming emperors disallowed foreign exploration