Reconstruction-
example of one challenge to change.
1) political
2) economic
3) social

1. Political example would be the US Civil war

2. An economic example of reconstruction is after the south lost to the north after the Civil war and the south had to reconstruct after their debt

3. A social reconstruction would be enemy's who were your friend before and now you want them to be your friend again so you talk it out

They mowt likely lived in caves or maybe rock houses,i know they are similar but its all i know