Answer: answer is B because All the continents that were once part of a supercontinent.
Explanation:
Building through the Sierra Nevada Mountains was very difficult and dangerous. Temperatures were freezing during the winter and in one year alone there were 44 storms.There was the great danger of an avalanche for the men working through 18 feet of snow and camping on the tunnels beneath it. Creating tunnels through the mountains required blasting with nitroglycerin. Advancing at one foot of mountain at a time, a total of 11 tunnels was created.
The land near the river was excellent for farming.<span />
Answer: Where sovereignty is left to the people to decide
Sovereignty is the idea of the people in the government.
