Which group organized a series of protests, including a prayer pilgrimage in washington, d. c., which convince congress to pass civil rights legislation?

The National Association for the Advancement of Colored People (NAACP)

Explanation:

The National Association for the Advancement of Colored People (NACCP) is an organization in the United States that was formed in 1909 in order to advocate for the advancement of African Americans. The founders of the NACCP included W. E. B. Du Bois, Mary White Ovington and Moorfield Storey. This organization was extremel influential during the civil rights movement. Their actions included the organization of a series of protests, including a Prayer Pilgrimage in Washington, D.C.

gave common people the right to vote

hope this

a. because the u.s. was the leading with the most technology, economy, etc. also was teamed with other allies witch boosted the economy and materials to improve technology and use it.