This was the busiest immigration center

the burlin wall

Explanation:

hope it helps

Ellis Island

About Ellis Island: Ellis Island is a federally owned island in New York Harbor that was the United States' busiest immigrant inspection station. From 1892 to 1924, approximately 12 million immigrants arriving at the Port of New York and New Jersey were processed there under federal law.

answer; i believe its (transgender);

answer; during stalin"s rule, many mothers told their children that he was the greatest thing to ever happen to russia;