It was the proclamation that forbade colonial settlements west of the Appalachian mountains. It put a stress on the relations between Britain and the Colonies because they believed that they had a right to continue to spread and take more land. This caused a good bit of problem between them.
I think you mean the Golden Spike which is the ceremonial final spike driven by Leland Stanford to join the rails of the First Transcontinental Railroad across the US connecting the Central Pacific and Union Pacific railroads in 1869 in Promontory, Utah.
Answer:During the early 1900s, the populations of US cities located on the West Coast were the highest, but by 2000, the populations of cities located in the Midwest became greater than those of the East Coast.
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