Microbes Go Global: The Power To Affect Others By Diseases

In this article, Microbes Go Global it talks about how everyone all over the world had the power to affect others by the diseases that they carried. Depending on the diseases these people all over the world carried, they had different impacts on each other no matter how they were spread, through trade or through travel alone. Many got killed because when trade groups had high numbers and were affected by the disease others were able to wipe out some whole groups because maybe their immune systems were already more immune to the diseases than others. Another way of spread of the microbes was from attacks. When nations got attacked and others were carrying diseases then that means that they spread easily and could take out whole armies and
such.