The Prime Meridian, divides the Earth at 180 degrees longitude.
Before the USS Maine exploded, the United States was trying to expand as a world power. Thus, many Americans blamed Spain for the explosion of the USS Maine because it gave them a reason to declare war on Spain and take control of Spanish territory in the Pacific and Caribbean.
The role of John Ross in the the Antebellum South was that, he was the Principal Chief of the Cherokee Nations from 1828-1866, serving longer in this position than any other person.
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The answer is, Political parties