<span> think the answer your teachers are looking for is D, but I disagree. Both of these concepts date back to ancient Greece or earlier. They resurfaced around the 18th century. </span>
D. one of a mixed ethnic backround
After the civil war, railroads connected the country on a national scale, boosting the economy and leading to mass production, mass consumption, and encouraging entrepreneurs.
Suburbs were becoming more affordable with the economic rise.
