WHY did the europens take stuff from the Chinese?

The Europeans paid the Chinese in gold or silver because there wasn't anything else that the Europeans had that the Chinese wanted. The Europeans could not give the Chinese their wool or linen because the Chinese had silk

the invasive species was introduced due to commercial purpouses, as there was a demand for fur clothes and hence, a business opportunity connected to this product. actually, it was when the nutrias scaped, causing harm to the us ecosystems when they acquired the status of invasive species. in this case they have caused an environmental problem, but it could have affected also economic interests or even human health.