How did europeans and native americans benefit from the columbian exchange?

Colombian exchange was as exchange of plants, animals, humans, culture, disease, technology and other things to the Africa, America and many other countries. This exchange benefited the old world with the introduction of new world crops such as corn and potatoes.

Apart from this, the exchange of education was also the one of the benefit of Colombian exchange for both Europeans and Native Americans.

The Colombian exchange gave new agricultural goods to Europe. The colonies supplied raw materials like cotton, wood and sugar to Europe that helped in economic growth.

answer; ///i believe that the correct answer is (b); ///the candidate must be a native born american citzen;

it would be  

germany had to pay all damages related to the war.

and i think

germany had to take sole responsibility for the war.