The Louisiana Purchase was actually when the USA bought present-day Louisiana from France; it added French influences into our country, as well as more land.
If you're asking in general then, the area has to have people who share common customs, belief and language.However, this might not entirely be true as there are some countries which have vast diversity and still portray nationalism.
Hope this helps!!
The federal government runs the federal court, and the state governments run the state court.
Answer:
The Spanish-American War was an 1898 conflict between the United States and Spain that ended Spanish colonial rule in the Americas and resulted in U.S. acquisition of territories in the western Pacific and Latin America.