What impact did portuguese forts have on the swahili city-states of east africa in the 1500s?           a. england invaded and took most of east africa.   b. portugal conquered most of east africa.   c. trade patterns were disrupted, leading to swahili decline.   d. the swahili conquered most of east africa.

B . portugal  conquered  most  of  the  East  Africa
  This  was  because  portuguese  had  superior  weapon examples  they  had  cannon  gun  which  produced  alot  of  noise which made  people  to  panic Also  they  had well  trained  soldiers  than  the  swahili  city  state  which  made to  defect  them.In  addition  they  used the  advantage  of  the  swahili  state  been  not  united.