A.D 476, for a total of 507 years, until taken by the ottoman turks in 1453
A.D 478-1453
The US government wanted to win the Space Race, and since they saw the USSR had already put an object into space they needed to catch up or beat them.
Cooperation
A bit more info: Cold War tensions between the U.S. and the Soviet Union from 1967 to 1979. The era was a time of increased trade and cooperation with the Soviet Union and the signing of the Strategic Arms Limitation Talks (SALT) treaties
John locke said "it is the government's job to protect the natural rights of life liberty and property, if it does not, you have the right to revolt"
Because from an outside prospective, a filibuster could virtually put the entire senate into a deadlock from a minority delaying or blocking a vote all together. This also means that in order to end a filibuster, you would require a “cloture vote” which is a super majority (67 out of the 100 senators) essentially taking power away from the majority.