The articles of confederation <span />
Under Article I, Section 8 of the Constitution, Congress has the power "to make all Laws which shall be necessary and proper for carrying into Execution the foregoing Powers, and all other Powers vested by this Constitution in the Government of the United States, or any Department or Officer thereof".
- Hydroelectric power<span> generation
Which in the </span>Alps<span> introduced rapid industrialization in coal deprived Northern Italy, in the 1890's.
- </span>Sir Henry Bessemer<span> invented a furnace which converted molten </span>pig iron<span> into steel in large quantities. It became widely available in the 1870's after the process was modified.
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- </span><span>The increase in steel production from the 1860's meant that </span>railroads<span> could be made from steel at a competitive cost. Being much more durable steel replaced iron as the standard for railway rail, and due to the greater strength of the steel, longer lengths of rails could be rolled.</span>
