What is Taoism?

I am wondering for one of my key terms this week in what Taoism is. What is Taoism, and can you tell me what it is in the simplest form ever? Please?

It is a way of life based on the ancient Chinese philosopher Tao's thoughts.

There are two type of Taoism, philosophical and religious. Philosophical Taoism believes in following the Dao. One of the parts of the Tao is action through non action. What this means is that we should let things happen to us. We should also not strive. We should be like water flowing down a mountain. It follows the natural course which is laid before it.

The ideas of Lao-Tzu. The way.

A religion based on the doctrinal text the Tao Te Ching written by Lao Tzu.