Way to much to answer all at once break it up into multiple questions and i would be happy to answer sorry! : /
After civil war the slaves that were released needed jobs so they worked as share copers by keeping up the fields for the owner and they would either be paid or get a certain amount of the crop.
Because the Europeans didn’t have the brain power to successfully do things on their own. They would steal from other countries and take their ideas. While other places were prospering they were lost.