The general thinking is that a law is unjust if it doesn't square with natural law. This is certainly the view that was put forth in Martin Luther King's Letter from Birmingham Jail.
So, a law that was passed that treated people differently wouldn't square with the natural law that all humans are equal. And thus, one would have the obligation to disobey that law.
voting beacuse voting is a choice
In 1933, Congress repealed Prohibition with the twenty-first amendment (D). This happened on December 5th and alcohol was officially legal on December 15th. It is the only amendment to have been ratifying state conventions, all other amendments have been ratified by state legislatures. Although alcohol only became legal on December 15th, people started drinking openly before this date.
Answer:
World War II ended
Treaty of Versailles was the immediate reaction to World War I not II