Answer:
Romans preferred a much more regular, rational layout and plan. They inherited the Greek tradition of city planning on rectangular grids but they refined it to include more open space and central public focus: the forum, a kind of city center where the most important civic buildings, temples and monuments would be located.
The United States tried very hard not to be involved in the war. At first all they did was help out their allies with food and other supplies. They didn't actively join the war until December 7, 1941 when Japan bombed pearl harbor. They officially declared war against Japan and soon after Germany.