Aregion is an area that shares some sort of common characteristic that binds the areainto a whole.
This reminded me of different regions of Alaska. It's similar to how Southeast Alaska is wildly different from northern Alaska. Southeast Alaska has a wetter and temperate climate, whereas Northern Alaska has a much colder and drier climate. Both of these regions are part of Alaska and share similar characteristics, but ultimately are vastly different.
Besides projections, another important characteristic of maps is the scale.
When I think of a scale, I think of the most common scale model of the Earth, a globe. When I see a globe, it's always fun to spin it around and try to find where I have been and traveled to. When I traveled to Italy, it wasn't just a spin of the globe; it was a 14-hour flight across an entire ocean. This is interesting because it shows how small we are compared to how big the world is.