How did the environment enable agricultural societies to trade? Early societies learned to rely on other villages for food when their crops failed.
Early societies developed crops to trade with to take control of new trade routes.
Early societies that developed a food surplus could trade with neighboring villages.
Early societies created trading posts out of temporary shelters for hunting and fishing.

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)

(b) britain had a much larger navy than the u.s.

(d) the u.s. had a small army compared to britain.

john maynrd keynes developed new economic respose to the                           ( b. great depression if the 1930's)