The diseases were not really controlled, those who caught the diseases either died or lived. If they lived they often passed on a partial immunity to their children which meant their children were less likely to be affected by some diseases.
France did.
japan
Germany, though weakened, still controlled much of the land it had before World War I
The Old World brought several diseases to the New World, most notably smallpox, measles, and influenza. These diseases had devastating effects on Indigenous populations, who lacked immunity to them. The arrival of these pathogens contributed significantly to the decline of Native American societies following European colonization. Smallpox, in particular, is estimated to have killed millions of people in the Americas.
In speaking about the term of "what" instead of "who" it must mean "things". In that context then the answer is diseases that had been unknown to Native Americans. Also, it can mean that horses and the wheel came to the New World, which were benefits. Also, firearms came to the New World as well.
Europeans, although diseases did exist in the new world before the Europeans arrived. They just brought more.
They brought in diseases
Had no natural protection from diseases brought by Europeans.
it brought diseases to the new world
spanish
yes they did im possitve
The diseases that the Europeans brought to the Caribbean were chicken pox, typhoid, bubonic plague, smallpox, measles, influenza and many more. Before, the native people didnâ??t know anything about these diseases thatâ??s why they did not have any immunity to these kinds of diseases.
Nobody controlled the British before WW2. They were self governed.
They began dying from the very moment the old world met the new world. So, when they met Columbus and his crew in 1492 they had no immunity from the diseases they brought.
Disease came with the Europeans. The old world brought diseases to the new world and they had no natural immunity to them.
Beginning with diseases such as measles and smallpox brought over by Europeans when they came to colonize, such as measles and smallpox, yes immigrants bring diseases with them when they come to America. In fact, diseases brought along, intentionally and unintentionally from Europe have killed off many of the native peoples in many parts of the world.
The inhabitants of the New World had no resistance to new diseases brought by the Europeans. -APEX