The answer is C) Only once he was convinced it was necessary to save the union.
Lincoln said "When, early in the war, General Fremont attempted military emancipation, I forbade it, because I did not then think it an indispensable necessity. When, a little later, General Cameron, then Secretary of War, suggested the arming of the blacks, I objected, because I did not yet think it an indispensable necessity. When, still later, General Hunter attempted military emancipation, I forbade it, because I did not yet think the indispensable necessity had come.
The Intolerable Acts was the tip of the iceberg to start the American Revolution.
U.S. Supreme Court Justice Earl Warren delivered the unanimous ruling in the landmark civil rights case Brown v. Board of Education of Topeka, Kansas. State-sanctioned segregation of public schools was a violation of the 14th Amendment and was therefore unconstitutional.
Good history research can be found on history archives. It’s a government website so it would be approved by teachers. I learned a lot from there and just studying :). Hope this helps.
Answer:
B. caused a boom in membership.
The Knights of Labor's 1885 strike against the Missouri Pacific Railroad was an overall success for the union because there was an increase in its Membership as it soared to 700,000 including 600,000 African Americans.