get married in the West, especially when they are poor and uneducated.

A single parent is one who is not married and raises their child without a spouse. You haven't provided ANY evidence to back up your claim that 1/3 of all women under 18 in the USA are single mothers. You can't just make up numbers out of thin air, after you misunderstand the data in the first place, and offer a new figure not based on any factual evidence.

So if you want to do the respectable thing then please retract your false claim, mate.