ONE WORLD, MOVING EQUATORS
Below are closeup views of the re-positioned equator in three different time periods. These positions are rough rather than precise. But they do suggest the size of the differences.
Compare each of these positions to the current position of the equator.
For north pole position #1:
For north pole position #2:
For north pole position #3:
And if the equator shifts, the line of tropics and sub-tropics also shifts. You can see the rough locations of shifts from deserts to 'jungles' because of equator relocations.
Notice that what is now Brazil--and the Amazon--are would be on the equator in all 3 situations. Saudi Arabia (and its potential for oil) would be very close in each situation.