October 22 – Ghiyāth al-dīn Naqqāsh, an envoy of the embassy sent by the Timurid ruler of Persia, Mirza Shahrukh (r. 1404–1447), to the Ming Dynasty of China during the reign of the Yongle Emperor (r. 1402–1424), records his sight and travel over a large floating pontoon bridge at Lanzhou (constructed earlier in 1372) as he crosses the Yellow River on this day. He writes that it was: "...composed of twenty three boats, of great excellence and strength attached together by a long chain of iron as thick as a man's thigh, and this was moored on each side to an iron post as thick as a man's waist extending a distance of ten cubits on the land and planted firmly in the ground, the boats being fastened to this chain by means of big hooks. There were placed big wooden planks over the boats so firmly and evenly that all the animals were made to pass over it without difficulty."
Radu II Praznaglava, supported by the Ottomans, and Dan II, with Hungarian help, start a seven-years-long struggle for the throne of Wallachia, after Mihail I is killed in a battle. The throne of Wallachia will switch from one to another about four times until 1427, when Radu II dies.
March 3 – Zheng He receives an imperial order from the Yongle Emperor to begin the Ming treasure voyages, carrying imperial letters, silk products and other gifts to various rulers of countries around the Indian Ocean.
On the Italian Peninsula, Venice has a population of 84,000, of which 200 men rule the city, while Florence has a population of 40,000, of which 600 men rule the city.
May 23 – The Sultan of Gujarat, Ahmad Shah I is finally able to return home to reassume the throne. [9]
June 10 – Gil Sánchez Muñoz y Carbón, a Spanish Roman Catholic bishop, is elected by bishops in Avignon as the third "antipope", succeeding the late Antipope Benedict XIII. , who had died on May 23 after a reign of more than 20 years. Sánchez Muñoz takes the name of Antipope Clement VIII[16] as the Avignon clergy disagree with Pope Martin V of Rome.
September 26 – Hundred Years' War: The Battle of La Brossinière is fought in France near Bourgon in what is now the Mayenne département. The English force of 2,800 men, under the command of Sir John De la Pole, is crushed by the armies of France, Anjou and Maine, and the English suffer more than 1,400 deaths.[20]
October 20 – The Second Parliament of King Henry VI of England assembles after having been summoned on September 1. The House of Commons, led by John Russell, will consider laws until its adjournment on February 28.
December 15 – After a two-year expedition to Byzantium, Giovanni Aurispa arrives in Venice with largest and finest collection of Greek language texts up to that time, including 238 ancient manuscripts.[21]
March 28 – King James I of Scotland is released after having been held captive in England for 18 years. James is freed after putting his royal seal on a ransom treaty of £40,000, secured by Scottish hostages taking his place, as agreed at Durham in England. [26]
April 5 – King James returns to Scotland for the first time since 1406, after being escorted to the border along with his wife Joan Beaufort, Queen consort, by English and Scottish nobles.[26]
May 21 – The coronation of James I as King of Scotland takes place at Scone Abbey in the Scottish town of Scone. After the ceremony King James performs his first knighthood ceremony, honoring 18 prominent nobles.
September 13 – After the signing of a treaty between the different factions in the Hussite Wars, the Bohemian campaign is completed in what is now the Czech Republic.
September 23 – The Hussites, led by Jan Žižka, begin marching towards North Moravia to suppress the ongoing rebellion there.
The Maltese people rise up against Don Gonsalvo Monroy, count of Malta. The insurgents repel an attempt by the Viceroy of Sicily to bring the island to order. The Maltese do not submit to Catalan-Aragonese rule, until the Magna Charta Libertatis, granting them their new rights, is delivered to them.
Beijing, capital of China, becomes the largest city in the world, taking the lead from Nanjing (estimated date).[34]
By this year, paper currency in China is worth only 0.025% to 0.014% of its original value in the 14th century; this, and the counterfeiting of copper coin currency, will lead to a dramatic shift to using silver as the common medium of exchange in China.
Sharafuddin Ali Yazdi's critical history of Persia, Zafar Nama, is completed under the auspices of Mirza Ibrahim Sultan, grandson of Timur.
Eunuch-dominated secret police start to control the palace guards and imperial workshops, infiltrate the civil service, and head all foreign missions in China.[36]
January – Spring – Radu II of Wallachia resumes the throne for the fourth time, but a seven-year struggle for it ends when he is defeated in battle, and probably killed, by Dan II, who resumes the throne for a fifth term.
May 7 – The Tourelles, the last English siege fortification at Orléans, falls. Joan of Arc becomes the hero of the battle by returning, wounded, to lead the final charge.
May 8 – The English, weakened by disease and lack of supplies, depart Orléans.
^"Antipope Clement VIII (1423-1429)", by Salvador Miranda, in Cardinals of the Holy Roman Church (Florida International University, 1998)
^Chan, Hok-lam (1998). "The Chien-wen, Yung-lo, Hung-hsi, and Hsüan-te reigns, 1399–1435". The Cambridge History of China, Volume 7: The Ming Dynasty, 1368–1644, Part 1. Cambridge: Cambridge University Press. p. 227. ISBN9780521243322.
^Srđan Rudić, Vlastela Ilirskol Probnika ("The Nobility of the Illyric Coat of Arms")(Istorijski Institut Beograd, 2006) p.131
^Juliet R. V. Barker, Conquest: The English Kingdom of France in the Hundred Years War (Abacus, 2010)
^Charles L. Stinger, Humanism and the Church Fathers: Ambrogio Traversari (1386-1439 and the Revival of Patristic Theology in the Early Italian Renaissance (State University of New York Press, 1977) pp. 36–37
^Jerzy Grygiel, Życie i działalność Zygmunta Korybutowicza: Studium z dziejów stosunków polsko-czeskich w pierwszej połowie XV wieku ("The Life and Times of Zygmunta Korybutowicz: A study on the history of Polish-Czech relations in the first half of the 15th century")(Wydawnictwo Ossolineum, 1988)
^Powell, Edward (2004). "Cheyne, Sir William (d. 1443)". Oxford Dictionary of National Biography. Oxford: Oxford University Press. doi:10.1093/ref:odnb/5264.
^Dreyer, Edward L (2007). Zheng He : China and the Oceans in the Early Ming Dynasty, 1405-1433 (Library of World Biography Series ed.). New York: Pearson Longman. ISBN978-0321084439.
^Chevalier, Michel (1997). La France des cathédrales : du IVe au XXe (in French). Éditions Ouest-France. p. 327.
^Gernet, Jacques (translated by Foster, J. R. and Hartman, Charles) (1936). A History of Chinese Civilization. Cambridge University Press. p. 407.
^The History of the Feuds and Conflicts Among the Clans in the Northern Parts of Scotland and in the Western Isles: from the year M.XX1 unto M.B.C.XIX, now first published from a manuscript wrote in the reign of King James VI. Foulis press, 1764.
^Joan Toralles describes the Olot quake in a brief notice in his Noticiari.