1. They built permanent houses
2. Organized governments
3. Held religious ceremonies
4. Had time for arts and crafts
An external influence is b)experiences. External influences are influences which you cannot control and which happen from life experiences and the different environments outside the home, such as the work place or an institution which you attend. Heredity is something passed on from the family, preferences are a choice you make yourself and lifestyle is a choice as well, so these are all more exempt from external influences than experience is.
changing it to the construction of a national railroad.
leading to the Emancipation Proclamation.
leading to the North giving up its antislavery stance.
African americans endured dangers of lynching and murder, Congress had sent government troops into the area to endeavor to uphold the Reconstructions laws and alleviate these dangers.