The "long march" of China was led by Mao Zedong so its C.
Well fossil fuels are such a largely used resource in the economy it is hard to transition from it since its so depended on for many things.
The Green revolution was meant to "<span>d. enable India to feed all of its people" since the Green Revolution represented a world-wide push to increase agricultural output in many countries. </span>
The first known pandemic was the Plague of Justinian, which took place in the Byzantine Empire in A.D. 542, it struck its capital Constantinople, part of the Sassanian Empire in the Middle East and several cities across the Eastern Mediterranean Sea. Modern scholars think it started in Central Asia.
