Answer:
grow fewer crops and raise fewer animals
Explanation:
i got it right
The King Center kept up its efforts. It organized a march on Washington that included an estimated 500,000 people. Coretta Scott King, along with Wonder, presented a petition signed by 6 million people to House leader Tip O'Neill. The House took up the bill in 1983 and it passed by 53 votes.
"To accommodate for lack of dependable rainfall" would be the best option as to why the ancient Chinese organized large groups of people to build and maintain irrigation systems, since when rainfall would not come for long periods of time, the crops would likely die without proper irrigation.