Answer:
A. Interchangeable parts made mass production easier and cheaper.
Explanation:
George Washington's primary goal as commander-in-chief of the continental Army was to avoid decisive military losses.
Option A is correct.
Unrest might have continued in much of the country because so many people supported the Communists.
Explanation:
Chinese Civil War was a conflict between the Kuomintang-led government of the Republic of China and the Communist Party of China. It lasted from 1945 to 1949 and eventually resulted into the defeat of the Nationalists by the Communists. It led to the creation of People's Republic of China on Chinese main land and the Republic of China or Taiwan. The Communists won because of the support of millions of Chinese on mainland and if outcome of war had been different because of any reason, unrest would have continued 1949 onwards in China because of immense support of people.
No, it is false that political conventions mostly take place on a national level, because states have mostly abandoned their use because of issues with fraud and corruption, since the most important conventions take place at the state level.