After alexander's death, greece and macedonia were ruled by ptolemy seleucus antipater alexander ii

After Alexander's death, Greece and Macedonia were ruled by Antipater.

Antipater- third choice

Antipater

Explanation:

Antipater was a business man, born in Macedonian that had fought for Alexander´s Father, the king Phillip II of MAcedon, and for Alexander as well, when Alexander wanted to face east and conquer Persia, Antipater was left as Greece and Macedonia´s regent, which basically gave him alexander´s powers to rule in his absence, when Alexander died, he kept those powers as regent and ruler.

begins a massive airlift of food, water, and medicine to the citizens of the besieged city

a. because the u.s. was the leading with the most technology, economy, etc. also was teamed with other allies witch boosted the economy and materials to improve technology and use it.