1720s BC

Millennium:	2nd millennium BC
Centuries:	19th century BC 18th century BC 17th century BC
Decades:	1740s BC 1730s BC 1720s BC 1710s BC 1700s BC
Years:	1729 BC 1728 BC 1727 BC 1726 BC 1725 BC 1724 BC 1723 BC 1722 BC 1721 BC 1720 BC
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