Nations Destroyed - Quick & Clear Bible Study

Why were some of the nations destroyed in the Old Testament?

Verses used in this study:
Genesis 4:1
Genesis 9:1
Leviticus 18:2,3,24-30
Deuteronomy 18:9-12
Deuteronomy 7:1-5
Deuteronomy 12:1-4
Deuteronomy 13:6-11
Psalm 106:34-42
Jeremiah 18:5-10
Prov 28:4,5
Luke 11:28
John 3:16