Which best describes the Okanogan Highlands region? It is Washington's gateway to the Pacific Ocean. It is Washington's largest region in size. It is located in the lowest-lying part of Washington. It is located in the northeastern part of Washington.

Option: It is located in the northeastern part of Washington.

Explanation:

The Okanogan Highlands is the expansion of the Rocky Mountains in the northeastern part of Washington. The region is one of the most beautiful places in Washington, and it contains many beautiful lakes. Its neighbouring states include Idaho and British Columbia (province of Canada). The Okanogan Highlands in the 1850s became famous for gold mining.  

the completion of the erie canal spurred the first great westward movement of american settlers, gave access to the rich land and resources west of the appalachians and made new york the preeminent commercial city in the united states.