AlexandervonHumboldtwasbornin1769inBerlin,Germany.Asayo...
问题详情：AlexandervonHumboldtwasbornin1769inBerlin,Germany.Asayoungboy,hewantedtolearnabouttheworld.Humboldtfollowedhisdream.In1799,hetraveledwithafriendtoCentralandSouthAmerica.Ontheirtrip,Humboldtand...