????????????????????????????????????????????????????????????? ?????????????????????????????????????????????????????????????????????????????????????????????????????????? ?????????????????????????????????????????????????????????????? ?????????????????????/??????????????? ????????????????? ?? ?? ??

?????????????????????????????????????????????????????????????????????? ????????????????????????????????/????????????????? ???? ?? ???????? ??????????????? ??????????? ?????????????????????????????????????????????? ??????????????????????????????????????? ???? ???? ???? ?????? ?????? ?????? ????

??????????????????????? (????) ???????????????????????????????????????????????????????? ?????[??] thanks to these functions, riverboats normally couldn't vacation any even further inland. Because settlements required a port along with a Prepared supply of h2o electrical power, they usually develop