Final answer:
Hera stepped in to help the Greeks in the Trojan War by influencing other gods to join their side and provide assistance, such as Athena providing military strategies and advice.
Step-by-step explanation:
Hera, the queen of the gods in Greek mythology, stepped in to help the Greeks after Achilles refused to fight in the Trojan War. One of the actions she took was to influence other gods to join the Greek side and provide assistance. For example, she convinced Athena to aid the Greeks by giving them military strategies and advice. Hera's intervention helped to turn the tide of the war and contributed to the eventual defeat of the Trojans by the Greeks.