How did earlier european explorers affect native american cultures

Explanation:

Europeans carried a hidden enemy to the Indians: new diseases. Native peoples of America had no immunity to the diseases that European explorers and colonists brought with them. Diseases such as smallpox, influenza, measles, and even chicken pox proved deadly to American Indians.  Hope that helped!!!

answer; ///i do believe that the correct answer is (d); ///athens had a small population;