Cuba does not encourage immigration and does not recognise dual nationality. I am very doubtful whether there are any Ethiopian people living in Cuba. The best advice is to contact the Cuban Embassy or Consulate in Ethiopia - I know that Cuba had a military mission there in the 1970-1980 period. Most political and racial refugees choose to emigrate to western democracies rather than totalitarian states like Cuba. Many of the western democracies have very generous immigration policies, my own country of Canada for example accepts quarter of a million immigrants per year and we have immigrants from over seventy countries. Average earnings in Cuba where the state is the major employer are about $25 per month.