Oh hey, let me know if you have a question.
Answer:
a. Seafloor spreading
Explanation:
As the plates move away from each other, new crust is formed at the bottom of the ocean, thus giving us seafloor spreading
I dont know the actual number but some of the soldiers were Africans and a good deal of soldiers were killed in the war including the black soldires.
Answer:A number of people had produced steam engines of sorts. Watt took the steam engine design of a man named Thomas Newcomen and made it much more efficient. This was Watt's major contribution to the Industrial Revolution. ... It is sometimes said that James Watt invented the steam engine.