Answer:
A
Explanation:
Archimedes systematized the design of simple machines and the study of their functions and developed a rigorous theory of levers and the kinematics of the screw. His works contain a set of concrete principles upon which mechanics could be developed as a science using mathematics and reason.
The first calculation of π(pi) was done by Archimedes of Syracuse (287–212 BC), one of the greatest mathematicians of the ancient world.
The correct answer is D. <span><span>commander of the Continental Army~</span></span>
Five colonists. the soldiers fired their muskets, killing five colonists.
The correct answer should be Elevated trains and subways replaced horse-drawn trolleys
Then, with the invention of the steam engine, electric motors and engines powered by the burning of fuels, ground transportation began to be performed by trains, cars, buses and trucks, among other vehicles.
Every day the means of transport are modernized more, gaining greater speed, efficiency and comfort.
I think the correct answer from the choices listed above is option A. The steps that carnegie take to try to improve society would be that he gave money to collages and schools. Hope this answers the question. Have a nice day.