The secret police were known as, CHEKA. The Cheka were known to have caused the RED TERROR.
Answer:
The gold-salt trade in Africa made Ghana a powerful empire because they controlled the trade routes and taxed traders. Control of gold-salt trade routes helped Ghana, Mali, and Songhai to become large and powerful West African kingdoms.
Under President Coolidge, the concerns of Mexican Americans and African Americans were D. LARGELY IGNORED.
President Coolidge favored policies that aided the growth of business and that creation of wealth benefited the nation as a whole. He focused more on growing businesses and did not dwell on the sufferings and discrimination that the Mexican Americans and African Americans experience in those times. His single-mindedness led to the booming of the national economy.
The reason why there was an increase in the total US urban population during the early 20th century is becasue of job opportunities in industry and improved living conditiosn in cities. But the most likely reason would probably be A - job opportunities in industry.