@1a for the readers that want to see a pattern, for those that like consistency. For those reading several articles on states.
 @1b and first the Mississippi River has the feature type included. First it reveals it is a river. That is what is true for most things Mount Victoria, Victoria Hill, XXX County, New York City, they get added the type. On Victoria except for Gallic Empire and Australia every link says something about the type.
 @2&3 And Victoria (Australia) could be anything, which is much more than for something to be anywhere. Victoria (Australia) could be a type of meal from Australia. Victoria (state) reduces the possibilities of what the article could be about much more. Of cause it does not tell how many people live there or what the capital is, or who the president (do they have one?), and not where it is located. But it reveals one feature of the State of Victoria, namely to be a state.