What are the three most important reasons for studying history?

From 1990 to 2008, by what percent did the world’s most developed economies cut their greenhouse gas emissions?

How did the united states ironically create a slaverybased market economy and democratic political system?

Why was the u.s. annexation of hawaii delayed until william mckinley became president? a: the rebels who overthrew queen liliuokalani opposed u.s. annexation. b: the senate did not approve the treaty of annexation until mckinley entered the white house. c: supporters of the nationalist cause were in the majority in hawaii until 1898. d: mckinley’s predecessor, grover cleveland, refused to sign the treaty of annexation.