1
2
100

to take unfair advantage of a person or group 

Exploit

100

a deep valley between mountains, cut through the rock by river water 

Canyon

200

A sea route connecting the Atlantic Ocean and Pacific Ocean 

Northwest Passage 

200

a special journey taken by a group that has a clear purpose or goal 

Expedition 

300

a few members of a group who are sent out ahead of the rest of the group to get information about the area 

scouting party 

300

a person who buys and sells goods to ear money 

merchant 

400

something from nature that is useful to humans 

natural resource