Diseases introduced by the Columbian Exchange caused a sharp decline in population levels in the Americas beginning in the 15th century. The correct option among all the options given in the question is option "C". The natives never faced the diseases that attacked them and so they did not have any cure for them. <span />
The Philippines have around 7,107 islands, which have been famous tourist attractions
The primary aim of the "Marshall Plan" was to provide aid to the devastated countries of Europe, while at the same time combating the advance of communism and <span>helping countries determine their own forms of government.</span>
Well one push factor would be they wanted to escape religious and political prosecution. Another is the Potato Famine. This was when their potatoes were contaminated and many died from starvation and disease.
I hope this helps somehow ;)
