Hello! I had a question about geography for a class. What four countries had claims on the North Pacific Coast Region by the end of the 1700s?

Hello! I had a question about geography for a class.

1. What four countries had claims on the North Pacific Coast Region by the end of the 1700s? 
2. What two metropolitan areas have the largest populations in the U.S. part of the North Pacific Coast Region?

Thank you!