How did nationalism, colonialism & imperialism, and the Cold War influence the contemporary map of the 20th century?

Plzz on what physical process is responsible for the creation of volcanoes, earthquakes and ocean trenches at the plate margins?

What must happen for new french words to be published in official dictionaries? a. they must be approved by the french academy b. they must be voted on by the people of france c. they must be used by famous french writers d. they must be used by philosophers a. they must be approved by the french academy

In what type of geographic location did humans tend to develop civilizations?