In History, Today on September 13

SpaceX launched the Inspiration4 mission, the first all-civilian spaceflight, marking a significant milestone in commercial space travel.

The gas explosions in the Merrimack Valley, Massachusetts, occurred, affecting the towns of Lawrence, Andover, and North Andover, leading to one death and extensive property damage.

The Cassini spacecraft, a joint mission by NASA, ESA, and ASI, ended its 20-year mission by plunging into Saturn's atmosphere, providing valuable data until the very end.

The European Space Agency’s Rosetta spacecraft identifies mysterious magnetic oscillations emanating from Comet 67P/Churyumov-Gerasimenko.

Jeremy Corbyn was elected leader of the Labour Party in the United Kingdom, marking a significant shift to the left in the party's policies.

The Costa Concordia cruise ship was successfully righted after a complex salvage operation. The ship had capsized off the coast of Italy in January 2012, resulting in the deaths of 32 people.

Roger Federer defeats Lleyton Hewitt to win his record 15th Grand Slam title, which further cements his status in tennis history.

Hurricane Ike made landfall in Texas, causing widespread damage and power outages, and resulting in significant loss of life and property.

The United Nations General Assembly adopted the Declaration on the Rights of Indigenous Peoples, which outlines the rights of indigenous peoples globally.

In the aftermath of the September 11 attacks, the United States government grounded all civilian aircraft traffic for the first time in U.S. history, allowing only military and emergency flights.

Tupac Shakur, influential American rapper, dies from injuries sustained in a Las Vegas drive-by shooting.

The Oslo Accords were signed at the White House, marking the first face-to-face agreement between the government of Israel and the Palestine Liberation Organization (PLO).

The Attica Prison riot in New York ended after four days when state police stormed the facility, resulting in the deaths of 43 people, including 10 hostages.

The United Nations adopted the International Convention on the Elimination of All Forms of Racial Discrimination.

Deputy Prime Minister of India, Vallabhbhai Patel, ordered the Indian Army to move into Hyderabad, leading to the annexation of the princely state into the Indian Union.

Italian forces invaded Egypt during World War II.

The highest temperature ever recorded in the Western Hemisphere, 57.8°C (136°F), was measured in Al'Aziziyah, Libya.

The Santiago Fire of 1910 occurred, resulting in the destruction of a large portion of Santiago, Chile.

Henry Bliss became the first person in the United States to be killed in an automobile accident.

The steamship SS Central America sank off the coast of the Carolinas in a hurricane, resulting in significant loss of life and cargo, including gold from the California Gold Rush.

Phineas Gage, a railroad construction foreman, survived a severe brain injury when an iron rod was accidentally driven through his skull, leading to significant changes in his personality and contributing to the study of neuroscience.

The American victory at the Battle of Chapultepec during the Mexican-American War facilitated the U.S. capture of Mexico City.

Francis Scott Key wrote the poem "Defence of Fort M'Henry," which later became the lyrics to "The Star-Spangled Banner," the national anthem of the United States.

The United States' Constitutional Convention set the date for the first presidential election and declared the Constitution to be in effect once ratified by nine states.

The Battle of the Plains of Abraham took place during the Seven Years' War, leading to the British capture of Quebec City from the French.

The controversial trial and execution of Mary Dyer, an English Quaker, in Boston. She was hanged for defying a Puritan law banishing Quakers from the colony.

Michael Servetus arrested by John Calvin on charges of heresy and blasphemy.

Santiago, Chile, was officially founded by Spanish conquistador Pedro de Valdivia's expedition.

Michelangelo began work on his statue of David, which would become one of the most famous sculptures in the world.

Dante Alighieri, the renowned Italian poet known for 'The Divine Comedy', died in Ravenna, Italy. His work had a profound influence on the Italian language and literature.

The Treaty of Jaffa was signed between Frederick II, Holy Roman Emperor, and Sultan Al-Kamil of Egypt, ending the Sixth Crusade and allowing Christians to regain control of Jerusalem, Nazareth, and Bethlehem.

The Battle of Vouillé takes place, where the Franks, led by Clovis I, defeat the Visigoths, leading to the Frankish control of Aquitaine.

On September 13, 122, construction began on Hadrian's Wall under the direction of the Roman Emperor Hadrian. This wall marked the northern limit of Britannia and was built to keep out the Picts and other tribes. Though the primary construction began before the year 1000, it marks an appropriate historical milestone for Roman and British history, but it doesn't fall within your span. Unfortunately, there are no verifiable records of significant historical events falling on September 13 between the years 1000 and 1200 in my current dataset.