The lost income from not taking a shift at work is an opportunity cost of studying for a test. a. true b. false

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

Clara barton was the first nurse in the united states of america. true or false?

Who was the 2nd president of the united states?