One could argue that the Lend lease act and other laws like this would increase America's likelihood of war because it resulted in America clearly favoring certain countries involved in the war. Many of the arms and weapons deals occured with countries who were part of the Allies. Even though the US was supposed to be "isolated" it clearly showed America's support of the Allies over the Axis Powers.
In the 17th century Europeans began to establish settlements in the Americas. The division of the land into smaller units under private ownership became known as the plantation system. Starting in Virginia the system spread to the New England colonies. Crops grown on these plantations such as tobacco, rice, sugar cane and cotton were labour intensive. Slaves were in the fields from sunrise to sunset and at harvest time they did an eighteen hour day. Women worked the same hours as the men and pregnant women were expected to continue until their child was born.
European immigrants had gone to America to own their own land and were reluctant to work for others. Convicts were sent over from Britain but there had not been enough to satisfy the tremendous demand for labour. Planters therefore began to purchase slaves. At first these came from the West Indies but by the late 18th century they came directly from Africa and busy slave-markets were established in Philadelphia, Richmond, Charleston and New Orleans.
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More men were drawn to the Roman army than to Alexander's army. The Alexandrian army was made up of Greek and Macedonian warriors. Alexander's troops fought for Greece and dignity. The Greek warriors' dignity provided them an advantage in those important fights. The Greeks had been fighting the Persians for so long that they had developed a loathing for them. Some of Alexander's warriors were not as powerful because, unlike the Romans, he had to seek support wherever he could find it. Alexander had no primary spot to which he returned after fights.
Although the principles of separation of church and state along with freedom of the press were advocated by many different Enlightenment philosophers, perhaps the most famous was John Locke.
President Roosevelt's New Deal created programs that were meant to help the United States pry itself loose from the grips of the Great Depression, mainly by providing government programs like the WPA, which gave many people employment opportunities.