The correct answer is manifest destiny.
Manifest destiny is the belief that it was America's god given right to expand from "sea to shining sea." In other words, it was America's destiny to expand their control across the entire North American continent from the Atlantic to the Pacific Ocean. This belief resulted in the US buying land from other countries, fighting in wars, and taking land from Native Americans in order to achieve this goal. This was present throughout American society during the early to middle of the 19th century.
The immediate result of trench warfare was that combatants on both sides were largely shielded from small arms and artillery fire, which prolonged the fighting and the war.
A) The Spanish were the first to explore the southwest !
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In the United States, a patroon (English: /pəˈtruːn/; from Dutch patroon) was a landholder with manorial rights to large tracts of land in the 17th century Dutch colony of New Netherland on the east coast of North America. (i found this from the web)