They were exposed for the first time to some kinds of sicknesses. This then spread.
Native Americans had never been exposed to the diseases which European immigrants brought with them. Therefore, they had not had any opportunity to build immunity to these diseases, while the Europeans had that opportunity. Immunity to something requires exposure to the particular disease-causing agent for a particular disease.
The Europeans had previously lived in more crowded areas, which caused different kinds of sicknesses that Native Americans were not yet immune to, because they had never been exposed to those sicknesses before. this made them very weak to them, and even lead to death while Europeans were used to them.
Overpopulated cities and lack of sewers made illnesses spread easily. Waste was dumped into the streets and germs found their way into the drinking water. The germ theory had not been known yet and there was no need to clean what could not be seen.
They never built up immunities to them.
immunisation
Because you only live once
The people did not have immunity against the disease
The flu killed the Native Americans because the disease had never introduced to them. When it came to them so suddenly it was deadly. The Native Americans hadn't built up there immune system to be able to defend the diseases that were brought by Christopher Columbus and his crew.
European disease had a devastating effect on the indigenous population of Native Americans. Smallpox, ravaged whole communities and is thought to have been a much more direct cause of the precipitous decline Indian population.
slaves got diseases like smallpox and dysentery
Smallpox and other plague like diseases. Also guns
The Aztecs spread diseases like smallpox to wipe out enemy populations.
I think it is probably war or diseases like smallpox and diphtheria. Sorry if I'm wrong
The most significant cause of death among Native Americans after the arrival of the Conquistadors was the introduction of infectious diseases, such as smallpox, measles, and influenza. The Native American population had no immunity to these diseases, which led to devastating outbreaks and decimated their populations.
Use it like this in a sentence I detest smallpox. You detest smallpox We detest smallpox. He detests smallpox She detests smallpox It detests smallpox.
Many Indigenous Australians died of diseases like measles, chicken pox and influenza