Question

base your answer to the following question on the map below and on your knowledge of social studies.
source: robert a. divine, et al., america: past and present, addison wesley longman, 1999 (adapted)
most of the northern boundary of the united states was created by treaties between the united states and
○ spain
○ great britain
○ mexico
○ france

Explanation:

The map shows northern U.S. boundary agreements including the 1818 Treaty with Great Britain, the 1818 cession by Great Britain, and the 1842 Webster-Ashburton Treaty with Great Britain, which established most of the northern border.

Answer:

Great Britain