Yes it was very important.
No, its military strength enabled it to play a leading part in the earlier Persian Wars.
Petroleum is important to the degree that Israelis need fuel for their cars and military vehicles, but Israeli is a petroleum importer, not an exporter, so petroleum is not important to the Israeli economy in the way that it is for the Persian Gulf countries.
The Persian Empire was important to Western Asia, the Mauryan Empire was important to India.
They stopped the expansion of Persian control into Europe.
Asia Minor was part of the Persian Empire. Alexander the Great took the Persian Empire by military conquest.
The US Military in the Persian Gulf is used to buttress US Support for Saudi Arabia and the Gulf Countries against Iran.
The Battle of Gaugamela, fought in 331 BC between Alexander the Great and the Persian King Darius III, was a significant battle that resulted in the decisive defeat of the Persian Empire. Alexander's victory at Gaugamela marked the end of Persian rule in the region and solidified Alexander's control over the Persian Empire, allowing him to continue his conquests further into Asia. The battle is considered one of the key moments in Alexander's military campaigns and his legacy as one of history's greatest military commanders.
The Greeks prevailing over Persian expansionism gave to the Greeks confidence in their military arms to defeat Persian armies/navies .
The goal that they had in common was to conquer the Persian empire.
remain a strong military presence in the Persian gulf region
remain a strong military presence in the Persian gulf region
He was below military age during the Persian War. He fought in the Peloponnesian War.