Strike partnered with Bitnob, an African Bitcoin company to allow US customers to send USD to Africa with almost no fees.
This is possible because the transfer of value is done through the lightning network, so the transfer is done almost immediately and with almost no fees.
People can still continue to use their local fiat currencies, but the actual transfer is done through the lightning network in this case.
“Payments are instantly converted into naira, cedi, or shillings, and deposited directly into a recipient’s bank, mobile money, or Bitnob account.”
The company charges a small fee for the conversion of USD->Bitcoin->Local fiat in Africa, but it's nowhere near the huge fees traditional banks charge for international money transfers.
We can now save people sending money back home to Africa billions of USD in transfer fees.”
Remittances are probably one of the biggest reason for people to use Bitcoin around the world, and Strike is using this to create a service around it. They are also planning to expand to other African countries.
source:
https://bitcoinmagazine.com/business/strike-launches-instant-african-remittances