Can you post the question??
Answer:
They were not industrialized they did not have their own factory, they could not have the entire crop to manufacturing to products, they struggled with stability and they needed other countries to help them.
Answer:
Settlement is the first place a group of people or a "tribe" claimed "home". Land use is how the land in a place is used.
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.