May's RIDDLE QUIZ, 1ST-2ND GRADE

Solve the riddle

I have cities but no houses; forests but no trees; rivers but without water; what am I? 

LEASE LEAVE YOUR ANSWER AS A COMMENT AND MAKE SURE THAT YOU ALSO WRITE YOUR NAME AND YOUR CLASS NAME. THE COMMENTS WILL BE PUBLISHED AT THE END OF THE MONTH AND THEN WE'LL ASLO TELL YOU WHO ARE THE WINNERS.

PLEASE DO NOT GOOGLE THE ANSWERS...