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.
Lay the steak on the grill and let the grill marks sear into the flesh for about 2 1/2 minutes. Rotate the steak 90 degrees and sear in a crosshatch pattern for about another 2 1/2 minutes. Turn the shark over with a spatula and continue cooking it until the flesh is opaque and flaky throughout.