Arrange the following events in space exploration in chronological order

1 humans orbited earth.
2 sputnik i was launched into space.
3 the first human stepped onto the moon.
4 explorer i was launched.

October 4, 1957 - Sputnik I was launched into space

Sputnik I, launched on October 4, 1957 by the Soviet Union, was the first artificial satellite in history.

January 31, 1958 - Explorer I was launched

Explorer I was the first artificial satellite placed in Earth orbit by the United States. It was launched on January 31, 1958 in response to the launching of Sputnik I and Sputnik II by the Soviet Union, thus giving way to the space race, closely related to the Cold War.

April 12, 1961 - Humans orbited Earth

On April 12, 1961, aboard the ship Vostok I, the Soviet Yuri Gagarin was launched into outer space being the first human being to reach it and travel through it.

July 20, 1969 - The first human stepped onto the Moon

In July of 1969, as part of the Apollo 11 mission, Neil Armstrong and Buzz Aldrin descended to the surface of the Moon and walked through it for two and a half hours.

lewis and clark (i think)

every of the four river valley civilizations, religion played an enormous role in shaping and cultivating each civilization. this essay will briefly discuss how religion formed the river valley people’s government and view on geography. religion dictated how the peoples of the river valley civilizations managed government and geography.

            religious leaders played prominent roles in every river valley civilizations form of government. from ancient egypt and mesopotamia to china’s historic empire and the indus river valley, all the river valley civilizations had significant religious figures. in ancient egypt, the pharaoh was revered as a god and therefore was given his right as supreme governing authority in the eyes of the people. the elusive emperors of china gained there governing rights by a mandate of heaven creating long lines of dynasties until the common people of china felt the dynasty had lost the favor of the gods. chinese emperors were not only governing leaders but also the spiritual leaders of ancient china. mesopotamian and indus river valley priests were referred as has head officials who had vast amounts of authority in these two civilizations primitive forms of democracy. religion shaped the structure and social caste of the four river valley civilizations.

hope that