Answer:
The Necessary and Proper Clause, also known as the Elastic Clause, is a clause in Article I, Section 8 of the United States Constitution: The Congress shall have Power. The Supremacy Clause of the Constitution of the United States, sets up that the Constitution, government laws made in accordance with it, and arrangements made under its power, establish the "incomparable Law of the Land", and in this manner take need over any clashing state laws.
In order to ensure that they had the water they needed for their farms, the Inca built large canal systems to irrigate, or bring water to, their fields. The canals also brought water to the cities. Many streets had supplies of fresh water running through a canal.
The purpose of the Yalta Conference (February 1945) was to discuss what Europe would look like after World War II. The conference involved the three largest allied powers during this time, including the US, Soviet Union, and Great Britain. This meeting revolved around getting Germany to surrender unconditionally as well as a plan for reorganizing territories and who would control them after the war.
The Potsdam Conference (July-August 1945) focused on punishing war criminals, land boundaries, reparations payments, and getting Japan to unconditionally surrender. Japans surrender would essentially end World War II.
In the long geological history of the Earth, humans first appeared during the Pleistocene Epoch, which dates back 1.6 million years to 10,000 years ago.