1. Americans felt the need to move west because they wanted to control the west part. 2. They also moved because they wanted cheap land to pay for.
I don't know what "this" means here - but Spain, England and Portugal based their empires on their sea explorations and colonizations - all their colonies were not reachable (or only by de-tours) by land.
China, on the other hand was not based on Islands, but connected by land: so here China is the best option.
<span>Option C. It contained n udity and bl asphemy. The musical Hair had a lot of controversies but it was not because of the type of hair represented by the people in the cast, but because of the series of n ude and bl asphemous scenes that this work contained since its appearance.</span>
