What are 3 important parts in old majors speech?

It's impossible to pinpoint just three "important parts" of a speech as broad as "Old Major's speech," without more context. Are you referring to:

* George Orwell's *Animal Farm*: In this context, the three most important parts of Old Major's speech are:

1. The description of the animals' oppression by humans: This sets the stage for the revolution and establishes the central theme of animal liberation.

2. The introduction of "Animalism" and the seven commandments: These principles form the basis of the animals' new society and serve as a moral compass for their actions.

3. The call to action: Old Major's stirring words inspire the animals to rise up against their human oppressors and fight for their freedom.

* A historical figure or event referred to as "Old Major's speech": If you're referring to a specific historical figure or event, we need more information to identify the three most important parts.

Please provide more details about the specific "Old Major's speech" you're interested in, so I can give you a more accurate and helpful answer.