Where did we first land on the moon?
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In what area did we first land on the moon with a man-made object?
east of Mare Imbrium east of Mare Imbrium near the craters Aristides, Archimedes, and Autolycus
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At what site did man first land on the moon?
Tranquility Base Tranquility Base, Mare Tranquillitatis
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What are the coordinates where we first landed on the moon with a man-made object?
29.1°N -0°E
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What are the coordinates where man first landed on the moon?
00°41′15″N 23°26′00″E 0.67408°N 23.47297°E
Moon landing
https://en.wikipedia.org/wiki/Moon%20landing
The first human-made object to touch the Moon was the Soviet Union's Luna 2, on 13 September 1959.

Moon landing
It was the first spacecraft to reach the surface of the Moon, and the first human-made object to make contact with another celestial body.
Luna 2
The United States' Apollo 11 was the first crewed mission to land on the Moon, on 20 July 1969.
Moon landing Uncrewed landings
Commander Neil Armstrong and lunar module pilot Buzz Aldrin formed the American crew that landed the Apollo Lunar Module Eagle on July 20, 1969, at 20:17 UTC. Armstrong became the first person to step onto the lunar surface six hours and 39 minutes later on July 21 at 02:56 UTC; Aldrin joined him 19 minutes later.
Apollo 11
Tranquility Base (Latin: Statio Tranquillitatis) is the site on the Moon where, in July 1969, humans landed and walked on a celestial body other than Earth for the first time. On July 20, 1969, Apollo 11 crewmembers Neil Armstrong and Buzz Aldrin landed their Apollo Lunar Module Eagle at approximately 20:17:40 UTC. 
Tranquility Base
Tranquility Base was named by Aldrin and Armstrong, and first announced by Armstrong when the Lunar Module Eagle landed. It is located in the south-western corner of the dark lunar plain Mare Tranquillitatis ("Sea of Tranquility")
Tranquility Base
There have been multiple moon landings. Some uncrewed with just robots to survey the area, and some missions sent human astronauts to the surface of the Moon. The first spacecraft to reach the surface of the Moon, was the Soviet Union's Luna 2 mission, on September 13, 1959. The spacecraft landed on the Moon's surface, east of Mare Imbrium near the craters Aristides, Archimedes, and Autolycus (29.1°N -0°E). The United States' Apollo 11 was the first crewed mission to land on the Moon, on 20 July 1969. Commander Neil Armstrong and lunar module pilot Buzz Aldrin formed the crew on this mission. They landed on Tranquility Base (00°41′15″N 23°26′00″E | 0.67408°N 23.47297°E), named by Aldrin and Armstrong after landing the Lunar Module named Eagle.    