<prompt> unaweza kugeuza matini haya ya swahilikwa kiingereza?kulingana na kitabu kimoja, miaka mia moja hivi baada ya columbus kuwasili huko, magonjwa kutoka nchi nyingine yalikuwa yameua asilimia 90 ya wakaaji wa mabara ya amerika.  <response>: within 50 years after the arrival of columbus, 90 of the native peoples had died from disease. 