Editing 1521 (section)

=== July&ndash;September ===
* [[July 15]] — [[San Juan, Puerto Rico|San Juan Bautista]] is founded as the new capital of the archipelago of [[Puerto Rico]].
* [[August 13]] &ndash; [[Fall of Tenochtitlan]]: [[Cuauhtémoc]] surrenders to [[Hernán Cortés|Cortés]],<ref>{{cite book |last1=Sheppard |first1=Si |title=Tenochtitlan 1519– 21. Clash Of Civilizations ( Si Sheppard) |date=2018 |publisher=Bloomsbury |page=87 |url=https://archive.org/details/tenochtitlan-1519-21.-clash-of-civilizations-si-sheppard-z-lib.org/page/86/mode/2up?q=%2213+august%22 |access-date=26 July 2023}}</ref> thus incorporating the [[Aztec Empire]] into the [[Spanish Empire]] and ending the Late [[Mesoamerica#Postclassic|Postclassic period]] in [[Mesoamerica]].
* [[August 20]] &ndash; The [[Italian War of 1521–1526]] breaks out between [[Charles V, Holy Roman Emperor]], and [[Francis I of France]] as [[Henry III of Nassau-Breda]] leads Imperial troops on an invasion of northeastern France.<ref>{{cite book |last1=Frieda |first1=Leonie |author1-link=Leonie Frieda |title=Francis I: The Maker of Modern France |date=2018 |publisher=Orion |location=London |pages=132–133 |isbn=978-14746-0-558-8 |url=https://books.google.com/books?id=21M_DQAAQBAJ}}</ref>
* [[August 29]] &ndash; [[Siege of Belgrade (1521)|Belgrade is captured]] by the [[Ottoman Empire|Ottoman]] army of [[Suleiman the Magnificent]].<ref>{{cite book |last1=Wheatcroft |first1=Andrew |title=The Enemy at the Gate: Habsburgs, Ottomans, and the Battle for Europe |date=28 April 2009 |publisher=Basic Books |isbn=978-0-7867-4454-1 |page=9 |url=https://books.google.com/books?id=XkLDVyYZPBYC |access-date=26 July 2023 |language=en}}</ref><ref>{{cite book |last1=Sarı |first1=İbrahim |title=TÜRK'ÜN SAVAŞLARI: Türklerin İslam Dünyasındaki Liderliği ve Savaşları |date=6 February 2013 |publisher=Kitapoku |isbn=978-605-4746-20-0 |page=216 |url=https://books.google.com/books?id=W-aVCwAAQBAJ&dq=belgrad+osmanl%C4%B1+s%C3%BCleyman+%2229+a%C4%9Fustos+1521%22&pg=PA216 |access-date=26 July 2023 |language=tr}}</ref>