Pick any type of failed amendment and tell me when the failed idea was introduced.

One type of failed amendment is Child Labor. Child Labor is a failed amendment that uses children for industry or business, especially when illegal or considered inhumane. The idea of Child Labor was introduced in 1836, but after a while the Child Labor amendment was introduced in 1922. During Child Labor, young children were forced to work by their parents, and not because they want to. In some countries in the Middle East child labor makes up 10% of the labor force. Through the first half of the 1800s, child labor was an essential part of the agricultural and handicraft economy of the United States.

do you have a list of sources to choose from?

"a government in which power is divided between state and national levels". federalism is a system of government in which entities such and state and province, share power with the national government.