The Europeans, USA, and Japan are primarily those launching imperialist policies in this topic, while other nations also expand their nation's land holdings.
Some states with existing colonies strengthened their control over those colonies and in some cases assumed direct control over colonies previously held by non-state entities.
European states as well as the United States and Japan acquired territories throughout Asia and the Pacific, while Spanish and Portuguese influence declined.
Many European states used both warfare and diplomacy to expand their empires in Africa.
Europeans established settler colonies in some parts of their empires.
The United States, Russia, and Japan expanded their land holdings by conquering and settling neighboring territories.