<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.kumekuwa na majaribio ya kusitawi lugha tena, hasa kwenye vipindi fulani vya nusu ya pili ya karne 19 na karne 20 ulaya.  <response>: on the other hand, across the whole region there were processes of artificial language purification, especially in 19th and 20th centuries. 