What country forms most of the northern border of the united states

Canada is the country that forms most of the Northern border of the United States. I recommend looking at the map and seeing what is directly above the 48 contiguous states.

The  ancient egyptians  who  built the pyramids  may have been  able  to move massive stone blocks across the desert by wetting the sand in front of a contraption  built  to pull the heavy objects

Iwould say the answer would be b