Who drew a snake cartoon which represented unity and independence?

You're likely thinking of the "Join, or Die" cartoon, which depicted a snake cut into eight pieces, each labeled with the initial of a British colony. This cartoon, published in 1754 by Benjamin Franklin, was a powerful symbol of the need for colonial unity in the face of the growing threat from France.

While the cartoon itself doesn't directly depict independence, it's considered a pivotal piece of early American propaganda that foreshadowed the eventual fight for independence.

The snake represented the colonies, and the idea was that if they remained divided, they would be vulnerable and easily defeated. But if they joined together, they would be strong enough to overcome any threat. This message resonated with colonists and helped to build support for the unity that would eventually lead to the American Revolution.