Here's a question I read in a book:
Most of the non-Western countries have been subject either to total colonial rule or varying degrees of economic control.
The question is whether the bold part requires improvement or not.
I feel that have been subject to either should be the correct answer, but the book says that have been either subjected to is the correct answer. So, I am confused.
Best Answer
This is more a question of good style than good grammar. When making lists of things, or comparing two things, it's good style to use the same sentence pattern for all the elements. For example, "Tomorrow we're planning to go boating, water skiing, and to scuba dive," is poor style. Better to say, "... boating, water skiing, and scuba diving."
Your example is a bit nit-picky, but the "to" is the problem word. As written the sentence is not as good as it could be, and should be "... subject either to total colonial rule or to varying degrees of economic control." Alternately it could be "... subject to either total colonial control or varying degrees of economic control."
So I agree that although neither sentence is actually "wrong", your sentence is better.