Whose invention bring a transformation from manual labor to a reliance on machinery?

steam powered engine

Explanation:

The Industrial Revolution was prompted by an invention that enabled the manual labor to be replaced with machinery. This invention was the steam powered engine. This engine enabled the machinery to be able to perform work, and not just to perform it, but to be much quicker, cheaper, and more efficient than the manual labor. The new invention of course needed human assistance as it was not able to work on its own, but it managed to improve and significantly speed up the manufacturing process, resulting in an economic boom and further development.

c. troops marched forward in close formation against newer, more accurate weapons

most people now work in jobs where they do one  kind  of work; they are carpenters, bankers, cooks, mechanics, and so forth. likewise, most  businesses produce  only certainkinds  of  goods  or  services, such as cars, tacos, or gardening  services. this feature of  production  is known as specialization.