The 'two rivers' of the name referred to the Tigris and the Euphrates rivers and the land was known as 'Al-Jazirah' (the island) by the Arabs referencing what Egyptologist J.H. Breasted would later call the Fertile Crescent, where Mesopotamian civilization began.

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Richard Nixon sent soldiers into Cambodia allegedly to destroy command and support facilities of north Vietnamese troops during the Vietnam war. So public outcry against the invasion of a neutral country resulted and then congress passed the war powers act
The correct answer is the 4th option (a more powerful central government that abided by rules).
The first option is incorrect because the government did not give more power to the states.
The second option is incorrect because a monarchy was not formed.
The third option is incorrect because, like the first option, the government did not give more power to the states.
The fifth option is incorrect because the government had an executive branch (the president).
Many Americans were against getting involved in a War that was being fought in Europe though begrudgingly Americans became aware there was danger on the High Seas as Atlantic waters became host to submarines while warships dueled in the waters of the South Pacific and Atlantic.
Many Americans, particularly the Wobbles, the IWW International Workers of World (rightly) argued that the main reason for fighting would be to profit by various means profits that would mostly land in the pockets of International Bankers and Industrialist, the Halliburton of the times.