The civil war came to an end when a big turning point Lincoln did the emancipation proclamation when freed slaves in the south if they can get to the north. With England not joining the Confederacy, the lost men, military and strength. The war ended in Spring, 1865. Robert E. Lee surrendered the last major Confederate army to Ulysses S. Grant at Appomattox Courthouse on April 9, 1865.
battle of antietam i think
One new development in the way Americans work is the work ethic has improved since modern technology. Modern technology has increased the need for well done work.
Another would be the new amount of jobs. This is because more and more people are getting into computer science and that way there is more jobs for those in America.
Crops from America were grown and sold in Europe and Africa.
Africa has very limited resources but Europe and America still produce good and other goods.