Two most important factors were the development of industry and industrialization, and the slave trade. People started accumulating large amounts of wealth due to these two and started investing them in businesses, both personal and by other people. This led to the development of capitalism not only in Europe, but other places too.
The western end of the railroad in 1858 was St. Louis.
By Burning Books? I'm sorry I had to look up your question. If I am wrong, I'm truly sorry.
The abolishment of slavery. The South wanted to keep their slaves
