What are three changes Mao made?

Explanation:

Leaders of China after Mao had to make a new rule called one child policy. Mao Zedong also made several changes to the Chinese language, such as switching from the Wade Giles system of Romanization to Pinyin. For this reason, Nanking is now called Nanjing on modern maps.

world war i began in 1914, after the assassination of archduke franz ferdinand, and lasted until 1918. during the conflict, germany, austria-hungary, bulgaria and the ottoman empire (the central powers) fought against great britain, france, russia, italy, romania, japan and the united states (the allied powers). to new military technologies and the horrors of trench warfare, world war i saw unprecedented levels of carnage and destruction. by the time the war was over and the allied powers claimed victory, more than 16 million people—soldiers and civilians alike—were dead.

explanation: