Many researchers believe the moon formed after Earth was hit by a planet the size of Mars billions of years ago.
This is called the giant impact hypothesis.
The hypothesis claims the moon is debris left over following an indirect collision between our planet and an astronomical body approximately 4.5 billion years ago.
The colliding body is sometimes called Theia, after the mythical Greek Titan who was the mother of Selene, the goddess of the Moon.
Several different theories have emerged over the years to explain the similar fingerprints of Earth and the moon.
Perhaps the impact created a huge cloud of debris that mixed thoroughly with the Earth and then later condensed to form the moon.
Or Theia could have, coincidentally, been isotopically similar to young Earth.
A third possibility is that the moon formed from Earthen materials, rather than from Theia, although this would have been a very unusual type of impact.
Or maybe God made Earth <3
Answer: Historian Charles C. Mann compiled evidence of a far more complex and populous pre-Columbian society.
Explanation: "From southern Maine down to about the Carolinas, you would have seen pretty much the entire coastline lined with farms, cleared land, interior for many miles and densely populated villages generally rounded with wooden walls. And then in the Southeast, you would have seen these priestly chiefdoms, which were centered on these large mounds, thousands and thousands of them, which still exist. And then as you went further down, you would have come across what is often called the Aztec empire and maybe better known as the Triple Alliance 'cause it was a group of three people, which was a very aggressive, expansionistic empire that had one of the world's largest cities as its capital, Tenutchtitlan, which is now Mexico City."
B. The Edict of Milan helped spread Christianity by allowing all religions in Rome.
