<span> Omar Khayyam is the answer</span>
Answer:
The answer is explained below.
Explanation:
The Branch of science that deals with the celestial bodies and the Universe is called Astronomy. People of almost all ancient civilisations studied astronomy.
One of the most important reason astronomy was important is that it helped them to keep track of seasons which allowed them plant and harvest crops at the correct time. It led to the development of advanced forms of agriculture.
Astronomy also allowed them to develop time keeping methods and calendars. It was also helpful in religion and politics as the ancient priests were aware of the time when the various celestial events would occur, so they could yield power by holding festivities tied to the astronomical phenomenon.
The priestly class were the only one who could predict such phenomena, astronomy was one one of the major reasons that helped them to become a powerful elite.
The correct answer is The Gulf of Tonkin Resolution.
After the Gulf of Tonkin incident during the Vietnam War, Congress agreed to give the executive branch (aka the president) significantly more power in terms of committing troops to a war. In the Gulf of Tonkin Resolution, it was stated that the president could commit military forces to a certain area without Congressional approval. Before this time, the president would have to convince Congress to declare war on a nation before comitting troops.