England once ruled a large empire which included countries in many parts of the globe

Question

Is it a simple complex or compound sentence 

Answer 1

How many clauses are there? 

If there’s only one clause, it’s simple.

 

If more than one, can either one stand alone? If so, it’s compound.

If more than one, but one of the clauses cannot stand alone, it’s complex.

 

So tell me: how many clauses? Can they stand alone?