Who is right Macedonia or Greece?

Answer 1

Macedonia is right.

In the 1800s, Macedonia existed as its original size. After the collapse of the Ottoman Empire, Serbia, Bulgaria and Greece took lands from Macedonia.
Greece took Aegean Macedonia and began to claim all of Macedonian history.
The Treaty of Bucharest is available on the internet and in history books for proof that they did recieve the lands.

Alexander gives alot of quotes and evidence to prove that he is Macedonian -- also, Alexander the Great and Philip conquered Macedonia. If he was Greek, why would he need to conquer his own motherland?