Answer:
By 1900 the United States had overtaken Britain in manufacturing, producing 24 percent of the world's output. After 1870 both Russia and Japan were forced by losing wars to abolish their feudal systems and to compete in the industrializing world.
Explanation:
The craters found on the moon and elsewhere in the solar system were created during the Late heavy bombardment period. During this period a large number of asteroids collided with some of the terrestrial planets in the earlier time.
This would be called Island Hopping. This is the slow process of capturing one island after another.