I think it's A I'm not sure though :/
On May 17, 1954, 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.
Answer:
The Bessemer Process was the first inexpensive industrial process for the mass-production of steel from molten pig iron prior to the open hearth furnace. The key principle is the removal of impurities from the iron by oxidation by blowing air through the molten iron.
Explanation:
Because we use this to help us stay on track with the money system.....
