Underground Railroad is not a subway, but a secret system used to help slaves escape from slavery of freedom in the United States.
The Underground Railroad System operated from the early 1800s to the American civil war in 1865.
The name Underground Railroad comes from the term subway because this system secretly brings slaves to flee to the main route of the train.
The underground railroad system involves thousands of people consisting of free people, former slaves, and sympathetic white people.
A number of tunnels, secret rooms, and basement are used as hiding places for slaves who are running away.
The code system uses secret language and code that is only known by underground railroad leaders and refugees.
During their trip through the Underground Railroad, refugees will receive assistance and guidance from the Underground Railroad conductor, such as Harriet Tubman.
Harriet Tubman, a slave who fled himself, helped more than 300 slaves to escape through the Underground Railroad.
Some cities in the United States have a history related to underground railroad, such as Philadelphia and Detroit.
Underground Railroad is one example of the struggle of society against slavery and oppression, and is a symbol of struggle for freedom and human rights.
