On an international stage Nigeria has a pretty poor track record (one of the lowest in the world in fact) in gender equality and women are often not even allowed to go out in public without their husbands being with them - Nigeria is a male dominated society full stop.Unfortunately domestic violence and rape in Nigeria are all too common so Nigerian girls are usually looking for more stable, more loving and more productive lives with foreign men.
The best rule for Nigerian dating, like most things, to keep religion in the back of your mind, but do not let it sour everything.
Many Nigerian women are much less doctrinaire about religion than you would expect in such a conservative culture, and if you are religiously conservative you will probably be surprised by the beliefs of a religiously conservative Nigerian lady.
You won't have to look very far to find a Nigerian bride.
From an aesthetic point of view Nigerian women are predominantly dark skinned but again with English, Portuguese, Spanish and other European influences you will notice a pretty broad cross-section of looks and skin tones.
This income gap is one of the reasons why so many Beautiful Nigerian girls go looking outside their own country for a mate.
Another reason Nigerian women want to date foreign men is because of their status in their own country.
In the larger cities, such as Lagos and the capital, Abuja, Nigerian women are much more likely to be highly educated and much more in tune with the broader world, but many Nigerian ladies living in more rural areas are likely to much less educated and in tune with modern western culture.
In the South Nigerian women are a bit more liberated and with a massive divorce rate in the country you'll find that the vast majority of single Nigerian women are very interested in becoming Mrs. Most Nigerian brides will usually be pretty conservative by the standards of the United States and Europe and they will also usually expect that you fulfill the traditional male role.
To be safe it is worth checking the US State Department's travel page for current update and alerts.