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.

Please mark brainliest

might be agreeing to participate ethically with other european nations in the slave trade

or notifying other european nations when taking possession   of african territories

b is the answer i am assuming