Gilded age is defined as the time between the Civil war captain America and world war z :\
Just kidding is the the time between the Civil War and World war 1 during which the US population and economy grew quickly.
D) Increased immigration in industrial areas.
By 1890, production by factories in American had grown eight times larger than what it had been before 1860. A large part of the workforce came from immigrants coming to the United States and settling in cities, looking for jobs. Ireland was one example of a country from which many immigrants came, looking for work in America, after the devastation of famine in Ireland (especially from potato crop failures).
Columbus was trying to find a way to India when he landed in North America.
President Theodore Roosevelt oversaw the realization of a long-term United States goal—a trans-isthmian canal. Throughout the 1800's, American and British leaders and businessmen wanted to ship goods quickly and cheaply between the Atlantic and Pacific coasts.
