Final answer:
Between 1760 and 1845, the Native American population experienced forced relocation, increased conflicts with European settlers, and a significant decrease in population due to the spread of diseases.
Step-by-step explanation:
Native American populations experienced forced relocation and removal from their ancestral lands, increased conflicts and wars with European settlers, and a significant decrease in population due to the spread of European diseases. The introduction of diseases such as smallpox, diphtheria, and measles to which Native Americans had no immunity resulted in devastating epidemics that decimated their tribes. This period of history between 1760 and 1845 had a profound impact on the Native American population.