According to Walter LaFeber, the two benefits to the United States from acquiring the Louisiana <span>Territory were that it would provide land for settlement, and that it would allow for more trade. </span>
D. internal improvements that could make the nation more self-sufficient
Long Term Effects of the Spanish Conquest of the Americas. Spanish became the main spoken language in Central and South America, and still is today. Christianity became the main religion throughout the Americas, and still is today. The Spanish conquest also had a big impact on the population of the area.