<prompt> Translate the following text to EnglishNguvu za kisiasa na kiuchumi ziliweka msingi mzuri kwa Datuk Seri Dr. Mahathir bin Mohamad, alipochukua madaraka Julai 1981.  <response>: Combined political and economic strength set a sound base for Datuk Seri Dr. Mahathir bin Mohamad, when he took up office in July 1981. 