June 8

Attila the Hun leads an invasion of northern Italy, devastating the region as his forces advance toward Rome.

Attila the Hun led his forces across the Alps into northern Italy, sacking several major cities and devastating the region as his army advanced toward Rome, a campaign ultimately halted not by military defeat but through negotiations, reportedly including intervention by Pope Leo I, that persuaded Attila to withdraw before reaching the city itself.

Viking raiders attack the monastery at Lindisfarne in Northumbria, an assault widely regarded as marking the beginning of the Viking Age in Britain.

Viking raiders attacked the undefended monastery at Lindisfarne off the coast of Northumbria, killing monks and looting the wealthy religious community's treasures, an assault so shocking to contemporary observers that it is widely regarded by historians as marking the symbolic beginning of the Viking Age of raids and expansion across the British Isles and beyond.

Edward the Confessor becomes King of England.

Edward the Confessor became King of England, beginning a pious and relatively peaceful reign notable for his patronage of Westminster Abbey, though his death without a clear heir over two decades later triggered the succession crisis that culminated in the Norman Conquest of England led by William the Conqueror.

King Richard I of England arrives at Acre to join the siege during the Third Crusade.

King Richard I of England, known as Richard the Lionheart, arrived at the besieged port city of Acre with his forces, joining French and German contingents already engaged in the prolonged siege during the Third Crusade, reinforcements that helped secure the city's eventual capture from Muslim forces weeks later.

Portuguese forces win a decisive victory over Spain at the Battle of Ameixial, securing Portuguese independence.

Portuguese forces decisively defeated a Spanish army at the Battle of Ameixial, a pivotal victory in the Portuguese Restoration War that helped secure Portugal's independence from six decades of Spanish Habsburg rule, ultimately leading to formal Spanish recognition of Portuguese sovereignty the following year.

James Madison introduces a series of constitutional amendments to Congress that eventually become the Bill of Rights.

James Madison introduced a series of proposed constitutional amendments to the newly formed U.S. Congress, addressing concerns raised by Anti-Federalists during the Constitution's ratification debates, a legislative effort that eventually produced the ten amendments known collectively as the Bill of Rights, ratified two years later.

President Theodore Roosevelt signs the Antiquities Act, granting presidents authority to protect significant natural and cultural sites as national monuments.

President Theodore Roosevelt signed the Antiquities Act into law, granting the president unilateral authority to designate national monuments on federal land to protect significant natural, cultural, or scientific sites, a power subsequently used by numerous presidents to protect landmarks including the Grand Canyon before it later became a national park.

Mountaineers George Mallory and Andrew Irvine disappear high on Mount Everest, their fate a lasting mystery of exploration history.

British mountaineers George Mallory and Andrew Irvine were last seen climbing toward the summit of Mount Everest before disappearing into cloud cover, never to be seen alive again, leaving unresolved for decades the tantalizing question of whether they might have reached the summit nearly three decades before Edmund Hillary and Tenzing Norgay's confirmed 1953 ascent.

Israeli forces mistakenly attack the American intelligence ship USS Liberty during the Six-Day War, killing 34 sailors.

Israeli aircraft and torpedo boats attacked the American intelligence-gathering ship USS Liberty in international waters off the Sinai coast during the Six-Day War, killing 34 American sailors and wounding 171 others, an incident Israel described as a tragic case of mistaken identity but which has remained a subject of enduring controversy and investigation.

A transit of Venus across the sun occurs, the first visible from Earth in over a century.

A transit of Venus across the face of the sun occurred, visible from parts of Earth for the first time in over a century since the previous transit in 1882, drawing significant scientific and public interest, with a follow-up transit occurring in 2012 before the next pair will not recur until the 22nd century.