Charles Cornwallis was defeated at the Battle of Yorktown.
The USSR extended its sphere of influence into Yugoslavia and Albania by supporting the communist parties in those countries. Yugoslavia separated from the USSR later on after a fight between those who supported the USSR way of Communism, that is Stalin, and those who supported the socialistic way, that is Tito.
Ayatollah Khomeini lead an opposition movement in Iran against Reza Shah Pahlavi to overthrow the authoritarianism type of government that the people disliked and create a new government. The people were fed up with the rule of Pahlavi and they wanted the change. Ayatollah Khomeini took advantage of this mood and returned to his country from exile.
Answer:
The correct answer is Rebuilding Constantinople.
The remnants of dozens of mammoths whose furs, tissues and internal organs were preserved intact for thousands of years in the ice and permafrost of Siberia have been examined by scientists who autopsied the bodies determined that many of these animals died suddenly as a result of fatal falls into crevices and holes hidden in the terrain. Other are believed to have died during violent blizzards that got the mammoths into a state of hypothermia very quickly.