<prompt> Translate the following text to SwahiliChina may have improved since 1979, but it still has an unblemished history of authoritarianism, five millenniums without sustained democracy.  <response>: China inaweza kuwa imeboresha tangu 1979, lakini bado ina historia isiyo na dosari ya utawala wa kimabavu, milenia tano bila demokrasia endelevu. 