A country being underdeveloped doesn't mean that BTC must be illegal there. Take note that a country may not have clear regulations about BTC and they may be hostile to BTC businsses, but until the country bans BTC or declares it as an illegal asset, you can surely send, receive and spend BTC in such a country. By the way, it is important that op understands his country's regulation on BTC, or just mention the country, let us search about it for them.