>>> 1. Have two separate databases and two separate web servers servicing the requests

>>> Always try and keep your web apps as close to the database as possible. Reduce latency.

This...

>>>Why do the different databases need to be in two different countries?

This is a legal requirement, we cannot keep health records of US citizens in Canada or health records of...

>>How will you tell where to send data? How can you tell if a user is from a country?

This will be part of the sign up process and saved in...