It convinced Congress to pass the Chinese Exclusion Act of 1882. But, the party would fail due to Kearney’s inability to lead a true revolution.
First, the US got involved for economic reasons. Americans felt that taking places like Hawaii and the Philippines would give them new sources of raw materials. It would also give them new markets in which to sell their goods. Second, Americans wanted to spread their way of life around the globe.
Besides connecting the eastern united states with the western united states, the transcontinental railroad was also instrumental in bringing in immigrants from ireland and china.
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The Incas built such a large road network stretching for 1000's of kilometers north and south of Cuzco, their capital, in what is now Peru, in order to keep the lines of communication open with their far flung empire, ie to convey messages to their local rulers, and probably for military purposes to have routes for their armies to follow in times of war. The roads were built by the ordinary people ie the men of a certain age would be subject to the mit'a or compulsory public service to build roads, temples and work in the mines.