The Murray _____ is in eastern Australia.
Plateau
Plain
Mesa
River
river
The Murray is River
http://www.google.com/#q=Murray+Australia
The Murray **River** is in eastern Australia.
To find the answer to this question, you can use various methods such as conducting an internet search or referring to geographical maps and resources. In this case, searching for the Murray River in eastern Australia would provide you with the correct answer.