The idea that regions are  fluid  means earth’s surface is floating on a hot magma layer formal geographic and political boundaries define a region a region cannot support life without a source of freshwater a region is difficult to define because it is influenced by  people's perceptions and perspectives

I believe the answer is a region is difficult to define because it is influenced by people's perceptions and perspectives.

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it depends on which society you are referring to. many civilization performed rituals so the gods would with their growing season but the most well known is that of the aztecs. they would make sacrifices, usually animals, but sometimes humans as well.

the federal government of the united states was established by the constitution. us is a presidential republic. the president is head of state, head of government and of a two party legislative and electoral system. the supreme court balances the powers of the federal and the state government. yhe executive branch is headed by the oresident. there are two chambers of congress, the senate and the house of representatives. judicial power is exercised by the judicial branch (or judiciary), comprised of the supreme court and lower federal courts. the judiciary's function is to interpret the   constitution as well as the federal laws and regulations.