I’d say C and D not quiet sure tho
<span>The correct answer sare The Great Wall of China, creating the Grand Canal, and Planting millions oftrees. Fighting the British over Opium came much much later, in the modern era, while marble statues were not as common in China as they were in let's say Greece or Rome. Chinese people used clay, like in the terracotta army.</span>
by making it possible for natural resources to be transported to different cities and towns