Which of the following describes an effect of the spanish-american war? cuba became a us territory. puerto rico became a us territory. the philippines was returned to spanish control. the united states traded the philippines for the island of guam.

i took the test it B.

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.