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The cause was Parkinson’s disease, which his family said resulted from exposure to Agent Orange, the toxic chemical sprayed by American aircraft as a defoliant in Vietnam.

Some deforestation can be traced back to the Vietnam War, when forests were sprayed with the toxic defoliant known as Agent Orange.

Parkinson’s disease, an inner ear disorder and other neurological problems, all likely caused by the Vietnam vet’s exposure to the infamous defoliant Agent Orange, made it difficult for him to move.

Many of the veterans had long complained about health problems they said were caused by the Agent Orange defoliant the American military used during the war.

“The optimal habitable zone is very specific. We are nearly ready with a defoliant.”