1. Industial Revolution
Electricity, Steel and Oil The three major improvements of the second Industrial Revolution were in the areas of energy and metal. It was based on oil, steel and electricity rather than coal and iron. The use of new materials made the second Industrial Revolution increase in size and technology, and mature more.ElectricityThe first dynamo, or electric generator, was developed in 1831. Its first applications were in communications. In 1837, two Englishmen had sent the first electric signals over a wire. ...
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