on a donkey
Mary&Joseph travelled on a donkey to Bethlehem because everyone had to go back to there home-town.
Mary and Joseph went to Bethlehem to register because Joseph traced his lineage back to people from that city.
Mary and Joseph went to Bethlehem to register with the Roman Government. Unbeknown to anyone God planned that Mary and Joseph go to Bethlehem so that a prophecy about the Messiah could be fulfilled, and that prophecy was that the coming Messiah would come out of Bethlehem. Jesus the Christ fulfilled that prophecy when He was born to Mary in Bethlehem.
Joseph and Mary had traveled to Bethlehem because there was a cencis and everyy man had to go to the town to where he was born.
Joseph and Mary traveled to Bethlehem , as it was told to go to their respective hometowns for the census.
Mary went to Bethlehem on horseback, and not by foot.
According to the roman decree , they went to Bethlehem , as it was Josephs hometown.