These are some of the states that gained their independence
MexicoHaitiColombiaVenezuelaBrazil
Survivors were affected economically because the tsunami destroyed lots of infrastructure that was crucial to the functioning of the economy, such as telephone poles, water works, etc. It affected them socially because it is obviously devastating to endure that kind of loss of life. It affected them environmentally because lots of raw sewage was leaked onto the streets, leading to health issues.
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The answer to this question is 1931.
