Answer: In the first half of the 20th century, many movements to become their own country emerged due to a stronger sense of national identity and cohesion, particularly in face of a foreign threat in many parts of the world. The Xinhai revolution (in 1912), which was led by Sun Yat Sen, is a good example. This movement ended the Chinese imperial system in favor of a Republic. In Turkey, a movement was led by Mustafa Kemal, which fended off occupying foreign powers, and unified the Turkish Republic after the first World War. On the Indian subcontinent, another movement led by Mohandas Gandhi, caused the country to gain its independence from the British Empire in 1947. All of these movements have in common the desire to defend foreign invasion and the struggle for liberation against what the people saw as oppression.
Explanation: (This was my answer when I had the question)