Hello! The answer to this is C. Transition.
Because the definition of transition is 'the process of changing from one state to another.'
Hope this helps! ☺♥
Watt aided the Industrial Revolution even more when he discovered a way to make a steam engine turn in circles. This made it possible to use steam engines for purposes other than pumping water out of coal mines. As a result, Watt aided the Industrial Revolution by making steam power far more useful for driving machinery.
In clearer terms, James Watt aided the Industrial Revolution by improving the Newcomen steam engine, resulting in a new, more efficient engine.
Hope this helps and if it does, don't be afraid to give my answer a "Thanks" and maybe a Brainliest if it's correct?
Answer:
I think the letter was about the first atomic bomb.
Explanation:
''The Einstein–Szilárd letter was a letter written by Leó Szilárd and signed by Albert Einstein that was sent to the United States President Franklin D. Roosevelt on August 2, 1939. ... It prompted action by Roosevelt, which eventually resulted in the Manhattan Project developing the first atomic bombs.''
got the explanation from wikipedia, hope this helps.
I'd say C for 10, D for 11, and A for 12.
But you might want a second person to verify.