The three branches of government are set up so that each branch of government has a defined role and that the roles are divided amongst the branches. This is known as separation of powers. So, in practice, the legislative branch might create the laws and the executive branch would execute those laws via agencies. Or the Executive branch might nominate a Judge but the legislative branch has to approve the Judge.
Checks and balances ensures that power remains evenly distributed amongst the three branches of government by giving each branch roles and limits to their roles.
I don't think anyone will write an essay for you. So do some research on your computer or phone. Make French one paragraph, Spanish one paragraph, and English one paragraph.
D. Tenochtitlan
Tenochtitlan was the capital of the Aztec nation, and was known for it's splendor, wealth, power, and even size. In fact, Spanish explorers often marveled at the city, and could not believe that the natives were able to create such an empire.
d. corn
It really depends on which Native American tribe is being talked about in the question, but many Native Americans survive on corn, which should then be your answer.
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Assembly Production Lines.
Ford learned from the meatpacking industry and gave each employee a discreet task along an assembly line that enabled the job to get done faster.