1621

Millennium:	2nd millennium
Centuries:	16th century – 17th century – 18th century
Decades:	1590s  1600s  1610s  – 1620s –  1630s  1640s  1650s
Years:	1618 1619 1620 – 1621 – 1622 1623 1624

Events

• February 9  – Gregory XV is elected pope.
• February 17  – Miles Standish is appointed as first commander of Plymouth Colony.
• March 16  – Samoset, a Mohegan, visits the settlers of Plymouth Colony and greets them, "Welcome, Englishmen! My name is Samoset."
• March 22  – The Pilgrims of Plymouth Colony sign a peace treaty with Massasoit of the Wampanoags.
• April 5  – The Mayflower sets sail from Plymouth on a return trip to Great Britain.
• The Swedish city of Gothenburg is founded by Gustavus Adolphus
• Riga falls under rule of Sweden
• Willebrord Snell discovers the laws of refraction.

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