Silicon Valley is geographically based too, and its center of gravity has shifted from Santa Clara County and the Valley proper, where the great first and second generation tech companies started, up through Palo Alto and Menlo Park in San Mateo County, and more recently, towards San Francisco proper.
Prior to the Season 3 finale your appearances were confined to flashbacks (on account of David being dead and all).   Brazil, with a population of almost 200 million is the most populated country in South America.
With a population of 62,252 as of 2014, it is the sixth-largest municipality in the state. The population of the surrounding area was 400,492 as of 2010, making it the third-largest urban area in South Carolina as well as the fastest growing.