These states have 6 electoral votes in 1876.
What is California, Arkansas and Connecticut?
These were the names of the two candidates in the 1876 election.
Who are Hayes (republican) and Tilden (democrat)?
This amendment granted African Americans the right to franchise (vote).
What is the 15th Amendment?
A Supreme Court case (1896) which ruled that segregation in public facilities was legal as long as these facilities were equal.
What was Plessy vs Ferguson?
The body of people representing the states of the U.S. who formally cast votes for the election of the president and vice president.
These places were not states yet, they were not included in voting for the president. (3 of them must be in your question).
What are territories like Washington, Idaho, Wyoming, Dakota, Montana, Utah, Arizona, and New Mexico?