<span>True </span>...................
1. malaria 2. rivers had terrible waterfalls..too dangerous...until the steam engine was invented it was incredibly dangerous 3. deserts....they didn't know how to travel through the deserts and find an oasis which made it very difficult to travel through
D. They acted to support big business.
During the Progressive Era (1890-1920), ending with the administration of President Woodrow Wilson, actions had been taken to regulate businesses and address the problems caused by industrialization and urbanization. But promising what was dubbed a "return to normalcy," the Republican party took control of both houses of Congress and the presidency in the 1920 elections. The Republican presidents of the 1920s (Harding, Coolidge, and Hoover) went in the opposite direction of previous Progressive Era policies. The were inclined to let corporations operate in a more unregulated fashion. They also raised tariffs to protect American business, and cut taxes for wealthy business owners.
... "The powers not delegated to the United States by the Constitution, nor prohibited by it to the states, are reserved to the states respectively, or to the people."
Archetypal in nature is the answer.