Generally speaking, the United States intervened in Latin American countries in the early 1900s to "<span>c. protect American lives and investments," since the Us was concerned about European encroachment in the region. </span>
Answer:
At the same time, they occupied the heart of prime bison range which was also an excellent region for furs, which could be sold to French and American traders for goods such as guns. The Lakota became the most powerful of the Plains tribes.
The head of government in a Parliamentary system would be the Prime Minister.
Hope this helps.
It was the Louisiana purchase.