The underground railroad was a mix of routes and safehouses used to help slaves escape. These secret routes and safehouses went north, there were states that were free like Pennsylvania,NJ, and Ohio were some escaped slaves would go but slaves also went to Canada. Other escaped slaves that were called “conductors” would help other slaves try to get to safety. This could cause tension between the north and south due to the Fugitive Slave act not being fulfilled. With this act not being in affect it caused tension between the north and south because the south was losing profit and becoming angry with the North because of this.