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.
I believe it would/can be C and A
Hope it helps :D
Who had the most nuclear bombs.
I think the answer is C because slavery started to slow in other places.
Answer:physical
Explanation:because without physical there wouldnt be no movement
