More land and because of the Gold Rush<span />
The Wilmot Proviso aimed to ban slavery in territory acquired from Mexico after the Mexican American War.
Those that were supportive of the Proviso were American citizens who were 1. opposed to the institution of slavery and 2. wanted to force the issue of slavery as a national issue. #2 is especially important as during this period, many were hoping to ignore the national issue of slavery or at least keep it from becoming the dominant national issue.
The result after the attack of Pearl Harbor was that the US formed a pact with Indochina against Japan!
Florence had amassed huge wealth because of their famous bankers who gained power. These bankers and politicians, most notably the Medici family, used their wealth to pay for commissions from famous artists of the time which enriched the society. This is one of the reasons why the renaissance began in Italy.<span />