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The sections of the Transcontinental Railroad joined together in Utah at a place called Promontory Point in 1869 where a famous photograph was taken of the two construction crew (minus the Asian workers who were forbidden from being in the photo) meeting and uniting the rail with a Golden Spike.
Compare: They both were fighting to gain and improve rights for African Americans
Contrast:
1863:
The purpose of the march was to advocate for the civil and economic rights of African Americans.
1941:
This march was designed to pressure the U.S. government into desegregating the armed forces and providing fair working opportunities for African Americans.