Answer:
Ｉ ｔｈｉｎｋ Ｕｎｉｔｅｄ Ｓｔａｔｅｓ ｓｅｎｔ ｔｏ ｂｏｓｎｉａ ｂｅｃａｕｓｅ Ｕｎｉｔｅｄ Ｓｔａｔｅｓ ｗａｎｔ ｔｏ ｈｅｌｐ Ｂｏｓｎｉａ ｉｎ ｔｈｅ ｍｉｄ - １９９０..
At the Battle of Bunker Hill, the colonists used the physical geography of the area to their advantage by firing on the British from a relatively safe position on the "high ground" of the battlefield.
Monroe doctrine
Monroe doctrine warns European countries to not colonize or puppet monarch
