Which nations claimed the oregon country? how did john quincy adams work to resolve the claims?

There were several nations who sought to claim the territory such as the Americans, British, French, and Spanish. John Quincy Adams resolved this through the Treaty of 1818 where the border of the United States and Canada was established at the 49th Parallel.  

Hope this Helps!! 

The answer is crop yield.

Remember soh-cah-toasoh: cah: toa: now, looking at the picture we can see that we have an angle, the hypotenuse and want to find the value of the adjacent side to the angle. so we use cah to find the adjacent angle. plug in what we have: we need to solve for x now so we get it by itself on one side: plug this into your calculator and you'll find that: