Bitcoin has a ability to help poor people like bitcoin give a platform to people to earn some money, its up to the people how much they earn from bitcoin and if you are talking about a whole country then it is difficult because bitcoin is not an NGO that will give people free money. Bitcoin is for those who are hard working.
Not just hard working people, in order to help them we first need the proper infrastructure, that includes proper household, good internet connectivity and minimum knowledge of the bitcoin network along with its advantages and disadvantages.
It is very tough to get this done in poor countries, considering the sheer fact that they are "poor".