The name manifest destiny was coined by a newspaper editor John O’ Sullivan in 1845. This was a term used to explain how United States should stretch from coast to coast. For the Americans expansion seems like it was natural cause for them. They had the intent of spreading all the way to the Pacific Ocean and they had achieved independence from the revolution.
Many Settlers believed that God himself had blessed the growth of the American Nation. They considered Americans natives’ heathens so turning tribes into Christians would save souls and they crossed Mississippi river.
At the same time Most American’s thought they were very important and held the key to freedom, this was further stressed by religious leaders. They looked as far as South America; they looked also at Canada and Mexico. The world was full of monarchy and aristocrats’ but then America was determined to ensure the whole world was free.
Oregon Trail is the most famous for those who headed west. Most of these people moved to the fertile Willamette valley.
The manifest destiny brought about territorial craze with Britain it raised issues that had been there. This was among the reasons that brought about war. Again the fight between Maine and Canada, this was a war was because of Land control issues. Finally it was settled after Aroostook war when the leaders of both sides agreed on a permanent border between Maine and Canada.
Britain and the United States also fought over the fertile Oregon area. And the dispute was unsolvable. This brought a huge clash since Britain had better claims but American settlers were far more than the British.
All these issues were all wars were all land and territorial based issues.
References
Mark C. and Garraty A. (2002). "The American nation: the history of the united states, since 1865 volume. McGraw: McGraw Hill.
Ismael, T. Y., Ismael, J. S., & Abu, J. K. (1991). Politics and government in the Middle East and North Africa. Miami: Florida International University Press.
http://www.sparknotes.com/history/american/precivilwar/section4.rhtml retrieved on 12th april 2013