Answer :
Based on the timeline provided, the major way the United States gained territory in the early 19th century was through diplomacy. This is evident from the various treaties mentioned in the timeline, such as the Louisiana Purchase Treaty in 1803, the Convention with Britain in 1818, the Adams-Onís Treaty in 1819, the Webster-Ashburton Treaty in 1842, and the Treaty of Oregon in 1846.
1. The Louisiana Purchase Treaty was a diplomatic agreement between the United States and France, where the U.S. acquired a vast territory from France, doubling the size of the country.
2. The Convention with Britain in 1818 and the Webster-Ashburton Treaty in 1842 resolved border disputes and established boundaries through negotiation and diplomacy.
3. The Adams-Onís Treaty in 1819 granted Florida to the United States through a diplomatic agreement with Spain.
4. The Treaty of Oregon in 1846 settled the boundary dispute with Britain over the Oregon Territory through diplomatic negotiations.
Overall, these treaties and agreements demonstrate that diplomacy played a crucial role in expanding and defining the territory of the United States in the early 19th century, making it the primary method through which the country gained land during that time period.
1. The Louisiana Purchase Treaty was a diplomatic agreement between the United States and France, where the U.S. acquired a vast territory from France, doubling the size of the country.
2. The Convention with Britain in 1818 and the Webster-Ashburton Treaty in 1842 resolved border disputes and established boundaries through negotiation and diplomacy.
3. The Adams-Onís Treaty in 1819 granted Florida to the United States through a diplomatic agreement with Spain.
4. The Treaty of Oregon in 1846 settled the boundary dispute with Britain over the Oregon Territory through diplomatic negotiations.
Overall, these treaties and agreements demonstrate that diplomacy played a crucial role in expanding and defining the territory of the United States in the early 19th century, making it the primary method through which the country gained land during that time period.