The correct responses regarding how European exploration affected Native Americans are:
- Native Americans formed trade alliances with Europeans.
- Many Native Americans died from European disease.
The other options, while they may have some context in certain areas, are not generally applicable. Europeans did not typically teach Native Americans how to travel along rivers, as many Native American tribes already had extensive knowledge of their local environments. Additionally, while some Native Americans may have benefitted indirectly from European exploration, the overall impact often led to exploitation rather than profit from resources like gold and silver.