In 1861 war broke out between the North and the South.The North, with more people and more factories, finally won. Slavery was ended, and country was free and united.Over three-quarters of a million men had been killed or wounded.The War Between the States,also called the Civil War,brought about many industrial changes.Many factories,steel mills and railroads were built. Oil wells sprang up.Improved transportation and communication united the country.Our inventions,natural resources and large labor forces helped us to become a great nation.Electricity began to be used.Power stations were built to supply the electricity for light and power. Our modern world was born in the days following the Civil War.By 1890 the United States was becoming one of the leading industrial nations of the world