Answer:
Imperialism is the state policy, practice, or advocacy of extending power and dominion, especially by direct territorial acquisition or by earning or gaining political and economic control of other territories and peoples.
Explanation:
Steam locomotive,because they were built during the Industrial Revolution.Which happen during late 1800's
They wore animal skins and made other things out of grass and things to weave together.
Rule by a single leader with unrestrained power.