<prompt> Translate the following text to SwahiliUnited States firms have been successful because they have had strong leaders running them, and an effective and strong board of directors can counterbalance a strong executive.  <response>: Kampuni za Marekani zimefanikiwa kwa sababu zimekuwa na viongozi wenye nguvu wanaoziongoza, na bodi ya wakurugenzi yenye ufanisi na yenye nguvu inaweza kupinga mtendaji mwenye nguvu. 