Which of the following best explains why most industrialized nations in the late nineteenth and early twentieth centuries were building empires? a] they needed colonies for their growing populations b] they desired a return to the empire-building of ancient times c] they wanted to make christianity the world's religion d] they required more natural resources and new markets

The correct answer for the given question above would be the last option. The statement that best explains why most industrialized nations in the late 19th and early 20th centuries were building empires is that, they  required more natural resources and new markets.

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in 550 b.c.e. cyrus the great, the leader of the persians, conquered the medes and united the iranian people under one ruler for the first time. cyrus became the first king of the persian empire and went on to establish one of the largest empires in world.

a. favoring native born americans over immigrants.