Their was a Dutch colony in the Americas because they wished to gain from the new worlds profits.The Dutch built trading posts along Hudson River. Dutch merchants were well known because of their good business.
During the Civil War, "Copperheads" referred to B. NORTHERN SUPPORTERS OF THE CONFEDERACY.
The Copperheads were those vocal democrats located in the Northern United States of the Union who were opposed to the American Civil War. They wanted to have an immediate peace settlement with the confederates.
The Republicans were the ones who called these antiwar democrats "copperheads"; likening them to the venomous snake.