18. The word "extended" in line 24 is closest in meaning to (A) increased (B) constructed (C) deepened (D) measured

19. According to the passage, Indiana and Ohio supported the development of the New York canal system by (A) helping to build the Erie Canal. (B) Building branches to connect it with the Ohio River (C) Providing much of the water for the Erie Canal. (D) Contributing financially to the construction costs