Zanzibar 's clove industry has been crippled by a fast-moving global market , international competition , and a hangover from Tanzania 's failed experiment with socialism in the 1960s and 1970s , when the government controlled clove prices and exports .
Zanzibar 's clove industry has been crippled by a fast-moving global market , and international competition . Tanzania 's failed experiment with socialism in the 1960s and 1970s , when the government controlled clove prices and exports , is also a factor .