What did civilizations have to do if there was not enough rainfall to secure the health of a crop and a good harvest?

The idea that government is not above the law is an example the principle of powers between state and national governments.the principle power.coining money is an example of athe concept that goverment's powers come from the people is

How do we make changes to the us constitution? a. through presidential order. b. through direct primary elections. c. through the amendment process. d. we can't!

Iwould appreciate it if someone can answer all the questions