Answer:
World war one was a global war that started on 28th July 1914 and lasted till 11 November 1918. At least forty million people died during this war.
Step-by-step explanation:
The war had long lasting effects around the world as it led to the downfall of Russian, Austro-Hungarian, German and Turkish monarchies. It marked the end of colonialism as people became more nationalistic and in middle East, Africa and southeast Asia started to revolt against their colonial master.
The first world war transformed the economic balance around the world as the European countries sank deep in debt and it made US the major creditor in the world. Inflation boomed in many countries, especially German economy was ruined due to the war reparations.
The invention and use of new weapons during the war also changed the face of modern warfare. After the war the need for an international body to promote peace and security worldwide became evident and League of Nations was formed.