United States control of Puerto Rico’s government with Puerto Ricans
becoming U.S. citizens after 1917; the Philippines providing a naval
base to guard U.S. trade in Asia, which in turn provided some
improvement in Filipino schools, roads, and healthcare.
Rayograph was part of the Dada movement. The correct option among all the options given in the question is option "c". As there was great comradery between the artists living in Paris, several artists did choose to make a living there. Between the years 1920 and 1923, many great artists were working together in Paris.
The Progressive Era Conservation Movement was a social movement taking place during the late 19th and 20th century that saw a resurgence in environmental conservation following the drastic exploitation of natural resources in the United States. Supporters of this movement included President Theodore Roosevelt who created state entities to preserve natural resources and lands.
The Hetch-Hetchy debate discussed the incorporation of water resources into San Fransisco's city planning, specifically the damming of an important river in Yosemite in order to grow the new city or the conservation of wild lands. Congress debated the issue, pitting conservationists and preservationists against one another, eventually, conservationists were victorious seeing a dam built in the Hetch Hetchy Valley.
They discriminated against African Americans