B. the British forces were indeed annihilated by Andrew Jackson.
B. prevent rebelious people
I believe it's 'go on the Lewis and Clark Expedition.'
I think it is 50°. If 130 is also the angle of elevation, then it is also the angle of depression. So the two angles up there (depression and x) equal 180 so - 130 = 50.
Answer:
They had acquired resistance to many diseases