The unemployment in Nigeria is a purposeful act by the Nigerian government, due to selfish and self centered mind set. They do these things for the citizens of the country to suffer.
The corruption in the country has eaten from the dept root of old leaders to the most newly elected leaders, and as a new government leader, you have to succumb to their existing methods. I take time to critically analyze the actions of the government to it's citizens; that in no time the citizens gains from the government and any possible little way in which the citizens will gains, they come up with one regulations to block it.
The internet being a place numerous opportunities exist, Nigerian IP address are restricted to access those sites.
Funny enough, the citizens still make way to survive, and that's why they can survive anywhere in the world.