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.
Kristance Harlow. Buenos Aires, the capital of Argentina, is the fourth biggest city on earth, but the rest of the world has surprisingly little knowledge of this vast and populated land. There is definitely more than meets the eye when it comes to Argentina.