Answer:
50
Explanation:
abc has to be 110
triangle angles add to 180
110+20=130
180-130=50
The appalachian mountains.
there isnt really any explanation it just is the appalachian mountains.
The following which would best categorize Canada's population is concentrated in the south. The three big cities are actually all within under a five-hour distance from the border of the United States (Montreal, Toronto and Vancouver). Cities in Canada are often concentrated in the southern part, because the further north you go, the colder it gets and the cold can often be quite brutal in Northern Canada.
Signed aggreements of trade