What kind of business can a house wife start with 1m naira?

If your location is Lagos and her interest is trading that buying and selling, the money you mentioned here cannot go anywhere.
When I started for my wife, my aim was to use 500k for shop and 1m for goods.
But guess what shop and it expenses took almost 1m and after buying goods worth of 1.5m , it looks as if nothing is inside the shop.
I spent over 4.5m to cut the long story short.
Though, this is not to discourage you, it depends on what you want to sell.