Azure has Ohio and Texas, but you'll probably not be able to provision all the machines you want so it doesn't really matter.

I think a lot of people are sleeping on the benefits of hosting workloads in these regions. Many finance, banking & insurance companies have already taken advantage. Most of your credit card transactions are handled by data centers that live ~barycentric to the continental US. Much of small US banking tech happens in places like Missouri.

and why are there hardly any in South America and Africa?