(Brainlist for correct answer) Why did power in medieval Europe shift from kings to nobles? Nobles hired knights for protection. Nobles controlled church officials. Kings did not have nobles’ loyalty. Kings needed the serfs’ protection.

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.

answer; i believe the correct answer is (general);