The Judiciary Act of 1789 made allocated Six justices to the Supreme Court. This six judge system lasted until 1807. At this time, Congress increased the number to seven. In 1837, the number of Supreme Court justices was then increased to nine. The amount of judges would change several more times before it was officially decided that this branch would have nine judges (like it does today).
That would be the Louisiana purchase of 1803.
OPTION A: They held the first national protest against the war in Vietnam.
Students for a Democratic Society (1960-74) was a student activist organization of the U.S., initially engaged in civil rights movement. It was responsible for organizing the first national protest against the war in Vietnam on Washington, D.C., in April 1965. Since then, the SDS grew more militant especially about issues relating to the war.
Atahualpa, also Atahuallpa, Atabalipa (in Hispanicized spellings) or Atawallpa (Aymara and Quechua)[2][3] (c.1500–26 July 1533) was the last Sapa Inca (sovereign emperor) of the Inca Empire (Tawantinsuyu) before the Spanish conquest. Atahualpa became emperor when he defeated and executed his older half-brother Huáscar in a civil war sparked by the death of their father, Inca Huayna Capac, from an infectious disease (possibly smallpox).[4]
During the Spanish conquest, the Spaniard Francisco Pizarro captured Atahualpa and used him to control the Inca Empire. Eventually, the Spanish executed Atahualpa, effectively ending the empire. Although a succession of several emperors who led the Inca resistance against the invading Spaniards claimed the title of Sapa Inca as rulers of the Neo-Inca State, the empire began to disintegrate after Atahualpa's death.