WHAT HAPPENED IN 1644.
Look what happened the 1644.

Abel Tasman's second Pacific voyage began. (29. February 1644)

The Third Anglo-Powhatan War began in the Colony of Virginia. (18. March 1644)

The Chongzhen Emperor, the last Emperor of Ming Dynasty China, commits suicide during a peasant rebellion led by Li Zicheng. (25. April 1644)

Ming general Wu Sangui forms an alliance with the invading Manchus and opens the gates of the Great Wall of China at Shanhaiguan pass, letting the Manchus through towards the capital Beijing. (25. May 1644)

Portuguese Restoration War: Portuguese and Spanish forces both claim victory in the Battle of Montijo. (26. May 1644)

Manchu regent Dorgon defeats rebel leader Li Zicheng of the Shun dynasty at the Battle of Shanhai Pass, allowing the Manchus to enter and conquer the capital city of Beijing. (27. May 1644)

Bolton Massacre by Royalist troops under the command of James Stanley, 7th Earl of Derby. (28. May 1644)

The Qing Dynasty Manchu forces led by the Shunzhi Emperor capture Beijing during the collapse of the Ming Dynasty. (6. June 1644)

Charles I of England defeats a Parliamentarian detachment at the Battle of Cropredy Bridge, the last battle won by an English King on English soil. (29. June 1644)

English Civil War: Battle of Marston Moor. (2. July 1644)

Battle of Tippermuir: James Graham, 1st Marquess of Montrose defeats the Earl of Wemyss's Covenanters, reviving the Royalist cause. (1. September 1644)

A Swedish–Dutch fleet defeats the Danish fleet at Fehmarn and captures about 1,000 prisoners. (13. October 1644)

Second Battle of Newbury in the English Civil War. (27. October 1644)

The Shunzhi Emperor, the third emperor of the Qing Dynasty, is enthroned in Beijing after the collapse of the Ming Dynasty as the first Qing emperor to rule over China. (8. November 1644)

John Milton publishes Areopagitica, a pamphlet decrying censorship. (23. November 1644)