This is the act, by a militarily strong country, of invading and taking over the sovereignty of another area. many times by placing a settlement or settlements of its own people to live in the new land.

The answer is Colonization. Hope it helps Mate! :)

it is a better alternative

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.