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.
Nigeriaâs population, which is growing and urbanizing at one of the fastest rates in the world, is expected to increase to 400 million from 180 million by 2050, according to projections by the United Nations. That would place Nigeria behind only India and China.