Question

what was one impact of europeon exploration on native american indians

Answer 1

One major impact was the introduction of Old World diseases (smallpox, measles, influenza) to which Native American peoples had little or no immunity. These epidemics caused extremely high mortality—estimates for some regions range from 50% to 90% population loss—which led to social disruption, loss of elders and traditional knowledge, weakened resistance to European settlement, and large-scale cultural and demographic change.

If you want, I can give other examples (land loss, forced relocation, trade changes, or introduction of horses).