I believe it would be agriculture which brought them more money thus leading to a stronger economy.
Answer:
3. all bodies in the solar system formed from an enormous gas cloud.
Explanation:
Nebular hypothesis -
According to this theory , the planets are made up of cloud material associated with the youthful sun , that is rotating in slow motion .
Later it was given that , all the celestial body present in the universe are composed of huge gas cloud .
Hence, from the given options , the correct statement for the nebular hypothesis is 3.
I would say A-lowland of the South
The answer is D. The question asks how different cultures influenced each other so that rules out options A & B. Option C is about the environment being destroyed, and that really has nothing to do with foreign influence.