The spread of slavery and greed for land.
Russia (USSR)
I'm pretty sure East or West Germany? Google it.
Yes, Thomas Jefferson had defeated pirates from North Africa during the Barbary War. He was responsible for doubling the size of the United States by successfully brokering the Louisiana Purchase. He also founded the University of Virginia. As well as was the founder of the Declaration of Independence.
Considerable investments in agriculture have enabled China's farmers to produce high volumes of staple crops, allowing the country to achieve a roughly one-to-one ratio of production and consumption of grains.
Mainly Slavery, Missouri was admitted as a slave state
