What does it mean to train something be useful people and improve crops animals?

The phrase "train something be useful people and improve crops animals" is grammatically incorrect and doesn't convey a clear meaning. It seems like you're trying to describe a process of improving things for people, but it's unclear what "something" refers to.

To help me understand your question, could you please rephrase it? Here are some possibilities:

* What does it mean to train people to be useful and improve crops and animals?

* What are some ways to improve crop yields and animal husbandry practices?

* How can technology be used to benefit people, crops, and animals?

Once you clarify your question, I can provide you with a more accurate and helpful response.