What were endemic diseases and/or disease vectors spread to the the americas by the Europeans

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A lack of safe water, poor hygiene, poor living conditions, and unsafe food can all cause diseases. These diseases are a major cause of suffering and death in an emergency situation. Climate can affect disease transmission in a variety of ways. Flooding after heavy rains can result in sewage overflow and widespread water contamination.

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b.   jim crow laws were enacted in northern states.

one central belief of buddhism is often referred to as reincarnation -- the concept that people are reborn after dying. buddhism is a philosophy of life expounded by gautama buddha ("buddha" means "enlightened one"), who lived and taught in northern india in the 6th century b.c.