Coal fueled the machines that were huge parts of the industrial revolution. It was also abundant and easy to find, so it was used a lot. You could probably also trade coal for a good price, considering how important it was to manufacturing companies at the time.
Answer:
D
Explanation:
Brown v. Board of Education of Topeka, 347 U.S. 483 (1954),[1] was a landmark decision of the U.S. Supreme Court in which the Court ruled that U.S. state laws establishing racial segregation in public schools are unconstitutional.
Some units for volume is liters and milliliters
It's a balance of powers between the three branches of government - each branch has checks and balances over the others to avoid corruption