I could be wrong but I think B, Although I would take someone other than my answer. Sorry i didn't know for sure.
Answer:
the second one "both were part of a larger effort..."
Answer: I am pretty sure it was the Eastern front. I hope this helps.
Answer:
James Watt created several contributions to the present country throughout the economic Revolution. He created varied enhancements on the Newcome external-combustion engine, fabricated the term horse power, and designed the Sun and gear wheel. He contributed most of his life to form others' lives easier and for them to prosper and grow.
Explanation: