Which biological organisms that travelled from the Americas to Afro-Eurasia had the largest long-term effect? Explain why.​ pls help

Biological organisms such as horses, diseases, and sugar had the longest term effect because we still use horses today, we have vaccines for diseases and every single American even diabetic have sugar included in their diets.

Explanation:

answer; /// slavery should be outlawed in the new country, was part of the initial draft of the declaration of independence, but not part of the final