About Manifesto
A manifesto is like a letter where someone talks about what they want to do or believe in. It can be from a person, a group, a political party, or even a government. Usually, it agrees with what most people already think or suggests new ideas for change. Manifestos can be about politics, society, or art, and they might even want big changes. Sometimes they talk about personal beliefs too. If a manifesto is about religion, it's called a creed or confession of faith.
Source - Wikipedia