The statement that best describes how these factors impacted Native Americans during this period is:
"Push factors like increasing pressure from European settlers and government policies forced Native Americans to leave their ancestral lands."
This option accurately reflects the historical context of the early 1800s, where Native American tribes encountered significant pressure from European settlers, including land encroachments, conflicts, and various government policies such as the Indian Removal Act, which resulted in forced displacement from their ancestral territories. The other options either misrepresent the nature of the factors (e.g., pull factors leading to increased wealth) or incorrectly emphasize the voluntary nature of movements.