What will be going after connection restored

Silly question but:
What if for some reason, for some amount of time all internet connection will be divided for example between north and south parts of the globe. And in this time people will log in in the same wallet in both north and south polese and send some btc from this wallet. And after few hours internet connection goes back to normal and it is time to sync nodes.
Lets pretend that hasrates between north and south parts are 50/50 %