What did europeans bring to the new world that caused the deaths of millions of native americans

When the Europeans arrived in the New World, they brought with them germs of various diseases. Native people who have not previously been confronted with these diseases have been massively destroyed. Germs of these diseases were rapidly thrived in dense and semi-urban areas. Thus, among the Native people appeared smallpox, measles, flu, whooping cough, chicken pox, bubonic plague, typhus, malaria, and viruses broke through the continent.

i just did something on this guy a few days a go give me two minutes to find it in my notes.