are these complex sentence. if it is complex, and are the subordinate clause right

Question

are these right? the subordinate clause are in capital letters

1-IN THE 1950S the giants were the national league team from new york.( COMPLEX)

2- fans argued all the time about WHO WAS THE BETTER PLAYER. (COMPLEX)

3- mays ,HOWEVER, may have been the greatest player of all time. (complex)

4- fans agree THAT SOME OF BASEBALL'S BEST TEAM HAVE COME FROM NEW YORK.(COMPLEX)

5- THAT TEAM HAD INCREDIBLY TALENTED PLAYERS; mickey mantle was one of them.(complex)

Answer 1

1. Incorrect. Since there is only one verb (were) in this sentence, it is a simple sentence.

2. Correct.

3. Incorrect.

4. Correct.

5. Incorrect. Both clauses can stand alone.