The Pope decreed that all lands discovered west of a meridian 100 leagues (one league is 3 miles or 4.8 km) west of the Cape Verde Islands should belong to Spain while new lands discovered east of that line would belong to Portugal. This papal bull also specified that all lands already under the control of a "Christian prince" would remain under that same control.
Some were killed in the boxer rebellion (apex)
The last frontiers to be mapped are the Polar regions. They were discovered something about between 1925 and 1935.
Hope this Helps! :)
Ouachita mountains would be correct!
