How did allowing other people to become citizens of Rome strengthen the Empire?

Being a citizen of Rome carried legal and social advantages.The right to have children of any such marriage become Roman citizens automatically. The right to have the legal rights of the paterfamilias of the family. The right not to pay some taxes, especially local taxes.

Explanation:

the dominoes began to fall. the surrender at appomattox took place a week later on april 9. while it was the most significant surrender to take place during the civil war, gen. robert e. lee, the confederacy's most respected commander, surrendered only his army of northern virginia to union gen. ulysses s. grant

explanation:

jewish people, gypsies, and political opponents.