The most dramatic and best-known story of railroading in the United States is the connecting of the Atlantic and the Pacific by railroad in 1869, tying of the oceans together by rail across the heart of the United States
mining
Producing by far a larger amount of copper than any other country, the United States is extremely fortunate in being able to supply to a great extent the ever-increasing demand for this useful metal.
How did the great Gold Rush of 1849 get started? Find out its history, how it made people rich and poor – and helped make California what it is today.
Thousands of lives would be lost before it was discovered that simple asbestos – something natural, helpful and seemingly innocuous – would actually lead to many major health problems.[
