英文句子理解.The Erie Canal was the first important national water

英文句子理解.
The Erie Canal was the first important national waterway built in the US.It crossed New York from Buffalo on Lake Erie Troy to Albany on the Hudson River.It joined the Great Lakes with the Atlantic Ocean.
1.It can be inferred that ( ) into the Atlantic Ocean.
A.the Great Lakes flow
B.the Hudson River flows
C.Lake Erie flows
D.the Eire Canal flows
逐句翻译我也不大理解,但是即便是翻译成中文,我也不大清楚.不知道是地理没学好还是什么的,我就是选不出来,脑子里没能呈现出一幅图,那些方位都把我搞晕了,那运河到底从哪到哪,途径什么,那块面积的大概分布是怎样的?.
可以的话,请把大概的地理图画出来.