I need to know for the Missouri compromise line why did leaders choose 36°36” as the compromise line?

What does it mean in the declaration of independence for cutting off our trade with all parts of the world

Answer the questions in the image for zoom in to read : )

Plz , ive been stuck on this forever. what action did president jefferson take to stop britain and france from seizing american merchant ships. a. he declared war on france. b. he called for increased tariffs on british and french goods. c. he called for embargo on all foreign trade. d. he declared war on britain.