Which of the following best describes how historians use time periods? a. to classify origins of species b. to organize time since the earth began c. to break up time to make it easier to study d. to categorize human history according to social or political themes

Human rights groups in the 20th century worked to: o a. european imperial powers maintain control over their colonies. o b. convince citizens in impoverished countries to embrace nationalism. o o o o c. ensure that people around the world were protected from brutal treatment. o d. weaken the influence of international organizations like the united nations. sub