Answer:
The West offered new opportunities.
Explanation:
Not only that the West was non-populated by the middle of 19th Century, but its natural resources were totally unused. That is why government supported settlers, and even promised them wealth and prosperity. Many people who moved westward really gained fortune, especially during famous gold rushes.
Answer:
Gypsum
Explanation:
Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO. 2H2O. It's used in many forms of plaster, blackboard/sidewalk chalk, and drywall :)
D.) Samual F.B Morse invented the electric telegraph
