The political structer changed during the gilded age because a lot of the leaders became rich during this era, causing them to be more invested in business politically.
I think it is A. Navigation Act
Answer:
It was on 9 November 1989, five days after half a million people gathered in East Berlin in a mass protest, that the Berlin Wall dividing communist East Germany from West Germany crumbled. East German leaders had tried to calm mounting protests by loosening the borders, making travel easier for East Germans.
