Final answer:
Abraham tried to convince God not to destroy Sodom and Gomorrah due to their wickedness. He interceded on behalf of the righteous people in the cities, asking God to spare them.
Step-by-step explanation:
The city that Abraham tried to convince God not to destroy is Sodom and Gomorrah. According to Jewish and Christian traditions, God planned to destroy these cities due to their wickedness. Abraham, however, interceded on behalf of the righteous people in the cities, asking God to spare them. Ultimately, God agreed that if there were even ten righteous people in the city, He would not destroy it.