Answer:The key differences between Old Major's speech and Lenin's speeches are:Audience: Old Major's speech is given to a group of farm animals, while Lenin's speeches were delivered to a variety of audiences, including workers, soldiers, and party members.Purpose: Old Major's speech is intended to inspire the animals to rebel against their human oppressors and establish a socialist animal utopia, while Lenin's speeches were aimed at promoting the goals of the Bolshevik Party and rallying support for the Russian Revolution.Style: Old Major's speech is characterized by simple, straightforward language and emotional appeals, while Lenin's speeches are known for their passionate rhetoric and sophisticated political analysis.Historical context: Old Major's speech is a fictional work inspired by the socialist ideals of Orwell, while Lenin's speeches were delivered during a period of revolutionary upheaval in Russia and had a significant impact on the course of world history.