This is when a strong country invaded and took over another area

This is called Colonization

Explanation:

The period of colonization in the Modern Age begins in the late 14th century, with the economic growth of European and Asian countries. Colonizations from this period are generally characterized by the use of violence and the domination of native peoples. Colonization can be made to settlement purposes or resource exploitation.

b)

it created free trade throughout the colonial territories.