Hot and dry in some places, but in other places it was full of life and water.
One landform found in Mexico is volcanoes, also mesas and buttes and canyons like the Canon del Cobre in I believe the province of Durango up on the interior plateau so it definitely has a variety of landforms which reflect that it is on the circum-pacific ring of fire and also is partly quite arid.
I think its green. Hope it helps.
So that later in time (or present day) it could be changed to fit better with the social, political, and economic changes of the US and the world.
Non-ecumene means regions of the world that are uninhabited or very sparsely populated. Usually the regions of the world that are ecumenic and non-ecumenic are hard to draw as many regions which are densely populated merge with sparsely populated regions and the boundaries that they do share are not static, as they can change with time and movement of people.