It was near water, it had high ground, and it was just so happened that they landed there, sorta by chance
the many sanctions imposed on Bolivia
the disappearance of thousands of people in Chile
the short Falkland War with Great Britain
the harsh suppression of a revolution in Algeria
No, the Colombian exchange brought new food to the Americas such as cattle, pigs, and wheat (in exchange for foods such as tomatoes, squash, and beans).