Compléter ImperialismVersion en ligne Unfinished Outline par Lynee Emery 1 is defined as a policy of extending a country's power and influence through diplomacy or military force . At the turn of the century was had the biggest empire in the world . They had more than any other country . Great Britain and the " Great " of Europe would extract from colonies in the form of such as agricultural , diamonds and . They used the people of the colonies as to extract these items . Through these colonies they had all over the world giving them immense strength . At one point in time the continent of only had one nation , the rest had all been colonized by various European nations ,