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I'm not sure eexactly wat you are looking for here but in the 1800 many cities were being made up of immigrants, fleeing to America for a better life. They changed the demographic of these Northern Cities, and played a great part in making America what it is today.
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Answer:Manifest Destiny, in U.S. history, the supposed inevitability of the continued territorial expansion of the boundaries of the United States westward to the Pacific and beyond. Before the American Civil War (1861–65), the idea of Manifest Destiny was used to validate continental acquisitions in the Oregon Country, Texas, New Mexico, and California. The purchase of Alaska after the Civil War briefly revived the concept of Manifest Destiny, but it most evidently became a renewed force in U.S. foreign policy in the 1890s, when the country went to war with Spain, annexed Hawaii, and laid plans for an isthmian canal across Central America.
 
        
             
        
        
        
Constantine because there was a conference in 326
        
             
        
        
        
The two events that spurred the need to chart new maritime routes are the following : Europeans developed the economic system of mercantilism and needed reserves of gold and silver ; and Europe witnessed a period that historians refer to as a "dark age."
 
        
             
        
        
        
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False, they wanted to get their point across.