<prompt> Translate the following text to SwahiliBy the 1980s, thanks to the broad avenues and new subway s tops built for the games, this had become one of the liveliest, trendiest, and demographically youngest quarters of the city.  <response>: Kufikia miaka ya 1980, kwa sababu ya barabara pana na viwanja vipya vya chini ya ardhi vilivyojengwa kwa ajili ya michezo, eneo hilo lilikuwa mojawapo ya maeneo yenye msisimko zaidi, yenye mtindo wa kisasa na yenye vijana zaidi. 