In 1949, the Chinese Communist Party (under the leadership of Mao Zedong) defeated the Nationalist party (Kuomingtang, led by Chiang Kai-Shek) in a civil war, causing the United States Republicans to accuse the Truman administration of "losing" China to the Communists.
The answers are Mao Zedong and Chiang Kai-Shek.
Squealer convinces the other animals to accept what Napoleon decides by stating that the healthier the pigs are the more intelligent and capable the animals would be of keeping humans away. Squealer has great oratory abilities and is able to appeal to the animals' fears.
Cause it was bigger than the rest and it could plant more tobacco more than the rest