The US victory on <span>December 29, 1890 </span>at the battle of Wounded Knee (also known as the Wounded Knee massacre) was largely influential to the American control of the west because it represented the last major conflict between the US government and American Indians. The second option is the correct answer.
The answer would be Ecosystem because that's the exact definition : D
Answer:
a free association of sovereign states
Explanation:
Westward expansion, the 19th-century movement of settlers into the American West, began with the Louisiana Purchase and was fueled by the Gold Rush, the Oregon Trail and a belief in "manifest destiny."