If a country doesn't have any law:

1. Judgements are hard to make decisions.
>There will be no judgment and decision making. 

2. People will be mad because it's no fair.
> People will be mad because there will be no justice and it is unfair for others.

3. It will happen many crimes.
> Many crimes will happen.

We rephrased your sentences, Alex to make it clearer and easy to  understand your message. But anyway, these sentences are good. You are very smart so keep improving your skills. ^^ Take care always and see you tomorrow.

~Teacher Cassie