One of eight children, Godwin Maduka came from a small village in Nigeria with thatched huts and no electricity or running water. The primary school was in a tiny church. Cars couldn't navigate its single lane dirt road. It was common for the drinking water, contaminated with feces, to infect townspeople with debilitating worms. The poverty he experienced in Nkerehi is a far cry from the life of a millionaire that Dr. Godwin Maduka enjoys today in Las Vegas with his wife and five children. He bought seven residential properties here for more than $7 million, according to Clark County…