Assertion: westward expansion | /r/HasProperty | aided in early 19th century
Facets:
value: by the war of 1812
type: TEMPORAL
value: greatly
type: DEGREE
value: by the louisiana purchase
type: OTHER
Source sentences:
text: Westward expansion was greatly aided in the early 19th century by the Louisiana Purchase (1803), which was followed by the Corps of Discovery Expedition that is generally called the Lewis and Clark Expedition; the War of 1812, which secured existing U.S. boundaries and defeated native tribes of the Old Northwest, the region of the Ohio and Upper Mississippi valleys; and the Indian Removal Act of 1830, which forcibly moved virtually all Indians from the Southeast to the present states of Arkansas and Oklahoma, a journey known as the Trail of Tears.