False. The empire ended with the overthrow of the last Czar and establishment of the [first] Russian Republic in 1917. It was the Republic which was changed to the USSR
Relationships between the two countries worsened
The relationships between the two countries worsened despite Carter strong intent to normalize relation between the two countries. This was caused by Cuba adventures in Africa and his sending of prisoners to the USA.
Southern blacks lost rights in the years after the thirteenth fourteenth and fifteenth amendments because the North withdrew many of the troops that had been enforcing these new laws, leaving southerners to pass a series of Jim Crow laws that prohibited blacks from voting, gaining jobs, and a variety of other things in the South.
After World War 2 Germany was dived into half. The western half was under American control and the Eastern half was under Russian control. Berlin lay in the Western half and was divided between Russia and America, meaning that East Berlin was an island of Russian controlled Germany surrounded by areas under American control. Russia was a communist country and people from East Berlin tried to flee to West Berlin and so the Berlin Wall was built to stop this.Until the east Germans were rescued by pink Floyd!