What tendencies characterized international relations at the turn of the 19th and 20th centuries?

At the turn of the 19th and 20th centuries, world relations escalated. The accelerated development of markets and the productive side of life forced many countries to expand their colonial possessions, which led to the discontent of neighboring states, which were thus infringed upon. Various spheres of activity developed in the countries of Asia and Russia, and soon they became competitors of the countries of the old world. The accumulated discontent resulted in a global war called the First World War. During it, each state defended its territorial interests.