The correct answer is:
An understanding of the number and size of leftover planetesimals in the early solar system.
The giant-impact hypothesis proposes that the Moon was created out of what was left of a collision between Earth and an astronomical body the size of Mars, around 4.5 billion years ago, in the Hadean eon. The heavy bombardment was a period when leftover planetesimals hit planets during the solar system's first hundred million years.
Because popes and Italian nobles resented the German power over Italy.
Answer: They did not want these powers to be controlled by just one man or one group.
Explanation:
Answer:
Assassination of stilicho, Aetius, and Majorian, who helped restore the west, betrayed from the inside, or killed in battle, combined with smallpox epidemics, whilst economic policies which were trash, failed to upkeep legions, and such to protect the empire's borders, which led to its collapse. The east fell, due to incompetent emperors, and the decline of trade, its debt, and the rise of venice, combined with the ottomans closing in on constantinople, and the sack of constantinople.
Explanation:
External military threats were a major cause of Rome's fall, and its effects spread across the empire. ... After Rome was divided, a powerful group known as the Huns began moving west, their numbers growing with captured prisoners and new allies. People from all walks of life were eager to reap the rewards of war. Rome fell through a gradual process because poor economic policies led to a weakened military which allowed the barbarians easy access to the empire. ... In the third century, Rome's emperors embraced harmful economic policies which led to Rome's decline
