How did the era of European exploration affect relationships among European countries? It caused them to compete with one another.
It helped them create more alliances.
It made them cooperate to help indigenous people.
It led them to negotiate trade routes with one another.

It helped them create more alliances.

Explanation:

Europeans gained new materials like gold, silver, and jewels. The Europeans enslaved the Native Americans and took most of them back to Europe. The explorers also gained new foods like corn and pineapple. Columbus also discovered tobacco seeds and brought the seeds back to Europe.

A

Explanation:

if it's wrong then it's D

1.) irish.

2.) settlers could obtain cheap land nearby

3.) steam engine

explanation:

treating native americans justly and giving them equal rights as citizens of the united states" was not a way in which americans sought to solve the indian problem. removal was the most popular idea.