Edom, ancient land bordering ancient Israel, in what is now southwestern Jordan, between the Dead Sea and the Gulf of Aqaba.

What race were Edomites?

They utilize the book of Obadiah to indicate that the Edomite is the White race.

Why did God punish Edom?

In v. 10 the main reason for God's wrath and judgment on Edom is given: "For the violence done to your brother Jacob, shame shall cover you, and you shall be cut off forever." Thus, as Boice notes, Edom's specific sin was an aggravated lack of brotherhood.