Second only to agriculture, many workers in the west worked in what industry? 1.navigation
2.commerce
3.manufacturing
4.mining

During the period of westward expansion leading up to the Civil War, the other predominant industry employing working was mining.  The Gold Rush brought settlers out by the thousands, and many were willing to take a chance on getting rich quick; however, it wouldn't be long before companies began to purchase claims on large tracts of land to increase their likelihood of finding gold, and those operations employed many who couldn't afford to mine a claim for themselves.

it's not the readmission

on this day in 1913, henry ford installs the first moving assembly line for the mass production of an entire automobile. his innovation reduced the time it took to build a car from more than 12 hours to two hours and 30 minutes.