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.
Sprinkle both side of the steak with salt (unless you have used salted butter, then you can skip the salt.) Place steak in hot pan. Let sear for 2 to 3 minutes until well browned. Use tongs to lift up to see if nicely browned. If so, flip to the other side and let sear for 2 to 3 minutes.