Mexico is a part of North America [1]. What is less obvious is whether Guatemala, Belize, Nicaragua, etc, would fall into N or S America. Central America is a region, like the Middle East, but is not its own continent. Central America is a part of North America [2]. Nathan made a good point that the United Nations considers Mexico a part of Central America [3]. I wonder why [4].
Sear each side, flipping minimally. It should not take long for a crisp brown crust to form. Depending on the heat of your pan, it should take about 2-4 minutes (or less) for each side to finish cooking. When the first side is done, flip your steak and cook the second side for about as long.
Place one or two steaks at a time in the skillet, taking care not to crowd them. Sear the steaks for 2 to 2 1/2 minutes, shaking the pan periodically to keep them from sticking. Turn the steaks and sear them for another 60 to 90 seconds on the other side, until well-browned. For a more restaurant-like appearance, you can substitute a grill pan for the skillet.