Engineers, who were the leaders of the Underground Railroad, helped slaves who were running away by providing them with food, shelter, and sometimes jobs. They hid the slaves from people who were trying to catch them and return them to slavery.
The GDP per Capita, in Nigeria, when adjusted by Purchasing Power Parity is equivalent to 32 percent of the world's average.
The 2006 United Nations Human Development Index puts Nigeria at 159 out of 177 countries, with 70.8 per cent of the population living on less than one dollar a day and 92.4 per cent on less than two dollars a day (Human Development Report, 2006).