The reason why spanish contact with Incas drove capitalism in Europe is multifold. After being exposed to the riches of the Incas empire, more and more ships were created in Europe (introducing more producers of ships and shipping supplies, etc.) because more and more people wanted to go to the New world themselves and exploit the riches that were available there.
virus originated in China, and later humans passed it to pigs near Fort Riley, KS. Inside the swine, the virus probably mutated into its more deadly form before being reintroduced to the American population.
