Two key events led to its being named the Negro National Anthem: In 1905, Booker T. Washington endorsed it, and in 1919, it became the official song of the NAACP.
Answer:
they were originally intended to encourage black Americans to participate in, and support the war effort, and to reflect an African-American perspective on world and national events.
Explanation:
:)
The factors that made it difficult for Eastern Europe to improve its water quality were outdated sewer systems, raw water quality, worn-out water utilities and unskilled employees. So we can say that four options given in the question fits the bill perfectly. These basic infrastructural reasons were responsible for being a hurdle towards improving the water quality. <span />
