Bitcoin network splits?
When the network rejoins, the chain with more proof of work wins. Servers on the losing chain will switch to the winning chain. Transactions from the losing chain will be recovered and mined into new blocks on the winning chain.

There are three types of transactions that can't be recovered:


Any transaction that claims a block reward cannot be recovered.
Any transaction that uses an input that is already consumed by a transaction in the winning chain cannot be recovered.
Any transaction that uses an input from a transaction that falls into either class above cannot be recovered.