Answer: to challenge segregation
Explanation:
The Monroe doctrine was the reaction and effect of the European powers plan to help Spain create or retake colonies in America. the doctrine, enacted in 1823,pointed out that the USA would intervene to protect the peace and freedom of independent states in the region of America.
Answer:The railroads created the first great concentrations of capital, spawned the first massive ... that united thousands of farmers and immigrants, and linked many towns and cities. ... This centralization of production made meat-packing an innovative industry, one ... Technological innovation accompanied economic development.
Explanation: