Answer:
Early humans survived because they created tools to fight and hunt for food. Also the creation of fire helped keep them warm and dry. Light helped scare predators and animals away.
Answer:
The AFL was a formal federation of labor unions whereas the Knights of Labor was much more a secretive type. One of the main differences between the Knights of Labor and the American Federation of Labor is that the former one was more radical.
Explanation:
Probably the ocean, seems interesting.
