75 People Who Changed the World by Ira Peck is a non-fiction book highlighting influential figures across history who shaped politics, science, religion, and culture.

It includes visionaries like Albert Einstein, Marie Curie, Martin Luther King Jr., Mahatma Gandhi, Leonardo da Vinci, Nelson Mandela, and others. Each profile briefly explains their contributions, struggles, and lasting impact on humanity.

In short: The book is a quick-reference guide celebrating innovators, leaders, and thinkers whose ideas and actions transformed the world.