<span> The Fertile land and supported a food surplus </span>
I believe the answer would be C, burning fossil fuels. Oil and gas is made up of the remains of microscopic plankton. Over millions of years the remains become the carbon-rich coal, oil and gas we can use as fuel. When fossil fuels are burned they release carbon dioxide into the atmosphere, thus contributes to global warming.
Imperialism because it shows the influences of other countries around the world
They hoped the use of force would keep workers from joining unions in the future.
Thus the answer is D