Code Noir was set by the French to help them regulate slavery and punishment. The Code required people that were colonized to provide food every week to the French. However, in Haiti, it did not function well as the people could only provide water and potatoes to the French. Also, the fact that the average lifespan of the "slaves" in Haiti was just 7 years didn't help the cause.
As the Cold War unfolded in the decade and a half after World War II, the United States experienced phenomenal economic growth. The war brought the return of prosperity, and in the postwar period the United States consolidated its position as the world's richest country. Gross national product, a measure of all goods and services produced in the United States, jumped from about $200 thousand-million in 1940 to $300 thousand-million in 1950 to more than $500 thousand-million in 1960. More and more Americans now considered themselves part of the middle class.
The growth had different sources. The automobile industry was partially responsible, as the number of automobiles produced annually quadrupled between 1946 and 1955. A housing boom, stimulated in part by easily affordable mortgages for returning servicemen, fueled the expansion. The rise in defense spending as the Cold War escalated also played a part.
To settle America and make a new and better place and break away from the harsh British government.
They were more free in spirit.