I think that The civil War is the most important event because it affected many lives and abolished slavery. It affected the lives of many slaves. That made America start the civil war. The civil war was when the country divided into the south and the north and fought for slavery This happened from 1861-1865.
The attack on the twin towers was when 2 people hijacked a plane and flew it into the twin towers. It happens in 2001 September 11. 2,000 people died in this attack. One person saved over 500 people's lives. 200 people jump from a window and were injured.
One small step for men one giant leap for mankind” quote by Neil Armstrong. Neil Armstrong landed on the on the moon in July 20 and returned on July 24 in 1969. They landed on the moon because America was in a Cold War with Russia. America won the race to the moon. This event is important because It shows how the worlds technology has changed.