1400s

These are some important events that happened in the years from 1401 to 1410. It is distinct from the decade known as the 141st decade which began on January 1, 1401 and ended on December 31, 1410.

1400

• Henry IV stops the Epiphany Rising. He kills the people who try to have Richard II of England restored as King.
• The princes of the German states remove Wenceslaus as Holy Roman Emperor.
• Rupert is elected as Holy Roman Emperor.
• Owain Glyndŵr is called Prince of Wales by his followers. He begins attacking Englishplaces in north-east Wales.
• Manuel II Palaiologos becomes the first (and last) Byzantine Emperor to visit England.
• The Medici family becomes powerful in Florence.

1401

• Timur raids the city of Baghdad in the Jalayirid Empire.
• A civil war starts in the Majapahit Empire in present-day Indonesia.

1402

• King Jogaila of the Poland–Lithuania union marries Anna of Celje. She is a granddaughter of Casimir III of Poland.
• May 21 – Following the death of Queen Maria of Sicily, her husband Martin I of Sicily marries Blanche of Navarre.
• The University of Würzburg, Germany, is founded.
• The Great Comet of 1402 is sighted.

1403

• February 7 – King Henry IV of England marries Joanna of Navarre.
• Henry 'Hotspur' Percy forms an alliance with Welsh rebel Owain Glyndŵr.
• July 21 – Battle of Shrewsbury: King Henry IV of England defeats a rebel army led by "Hotspur" Percy. Percy is killed in the battle by an arrow in his face.
• In China, the Ming Emperor Yongle moves the capital from Nanjing to Beijing.
• The world's first quarantine station is built in Venice. It is to protect against the Black Death.
• Stefan Lazarević makes Belgrade the capital of the Serbian Despotate.

1404

• June 14 – Rebel leader Owain Glyndŵr allies with the French against the English.
• October 17 – Pope Innocent VII succeeds Pope Boniface IX as the 204th pope.
• November 19 – St. Elizabeth's flood ruins parts of Flanders, Zeeland and Holland.
• Jean de Béthencourt becomes the first ruler of the Kingdom of the Canary Islands.
• Stephan Tvrtko II succeeds Stefan Ostoja as King of Bosnia.
• The University of Turin is founded.

1405

• June 8 – Archbishop Richard le Scrope of York and Thomas Mowbray, Earl of Norfolk, were executed in York on Henry IV's orders.
• Bath Abbey is built in England.
• First written record of whiskey being drank is recorded in Ireland. It was distilled by Catholic monks.
• Early feminist Christine de Pizan writes The Book of the City of Ladies.

1406

• April 4 – James I becomes King of Scotland.
• October 26 – Eric of Pomerania marries Philippa, daughter of Henry IV of England.
• November 30 – Pope Gregory XII succeeds Pope Innocent VII as the 205th pope.
• December 25 – John II becomes King of Castile.
• Construction of the Forbidden City begins in Beijing.

1407

• April 10 – The fifth Karmapa finally visits the Ming Dynasty capital, then at Nanjing.
• November 23 – The Duke of Orleans is killed; war starts again between the Burgundians and his followers.
• Rudolfo Belenzani leads a revolt against Bishop Georg von Liechtenstein in Trento, Italy.

1408

• December 13 – The Order of the Dragon is founded under King Sigismund of Hungary.
• Henry, Prince of Wales retakes Aberystwyth from Owain Glyndŵr.

1409

• January 1 – The Welsh surrender Harlech Castle to the English.
• December 2 – The University of Leipzig opens.
• Martin I of Aragon becomes King of Sicily.
• Ulugh Beg becomes governor of Samarkand.
• Venice buys the port of Zadar from Hungary.