The answer for that question is The civil trial
And that the system aristocratic
From research I did I found they traded grain for cereals, wine, olives, figs, pulses, eels, cheese, honey, meat, tools, perfumes, and fine pottery. Hope this helps!
One of the main reasons Rome did not expand farther north was because this area was inhabited by several hostile tribes and groups, that became too much of a headache for the Romans.
The immigration act 1924 (Hart-Cellar Act) was to enable the United States government to execute power to limit the number of immigrants or non-northern Europeans to enter into the U.S. This limitation aimed at limiting the number of Europeans and Asians entering the country. Later, in 1965the act was modified since it did not honor American Core principles which were; liberty, equality, unity, and diversity.
In removing the racial and national barriers the Immigrant act would alter the demographic mix in the United States.