Geography has a profound effect on where civilizations settle. The earliest civilizations resided within river valleys, and used the area around them to create opportunities to benefit their growth. Mountains, rivers, and plateaus provided natural defenses, at the cost of movement and trade.
I would say B is the answer to this question.
He was put in charge based on his previous military experience
D) <span>John Brown, an extreme abolitionist, tried to end the entire institution of slavery by attacking a federal armory in hopes to arm slaves in 1859—the raid failed.</span>