<prompt> Translate the following text to SwahiliUntil the end of the 1980s, Soviet trade and subsidies were crucial factors in propping up Cubas heavily centralized and often badly planned economy.  <response>: Kufikia mwishoni mwa miaka ya 1980, biashara na misaada ya Sovieti ilikuwa sababu muhimu katika kuimarisha uchumi wa Cuba uliokuwa umezungukwa sana na mara nyingi uliopangwa vibaya. 