The River Valley Civilizations government and organization were needed for: A. public works like building flood control and irrigation infrastructure
B. establishing religious traditions and social norms
C. inventing new farming tools and methods
D. making hand-crafted goods

nothing certain is known about what happened, but it seems that the country declined gradually, perhaps due to bad government, or, more likely, due to a series of bad harvests, which resulted in widespread and recurrent famine.

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

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

the answer is c. brainliest me