What does the context suggest is the most likely meaning of integrate in this passage from Through My Eyes

In this passage from "Through My Eyes', the most likely meaning of the word integrate that can be taken is to mix groups together.

Explanation:

The author of the book 'Through My Eyes' seems in this passage to be inclined towards talking about bringing people from various groups together that she has already talked about. The passage intends to inculcate on the minds of young readers the idea of coming together to integrate and create something good.