June 13 in History

Two emperors who hated each other agreed on exactly one thing. Constantine and Licinius met in Milan in February 313, sealed a political marriage, and hammered out a document granting every Roman — Christian, pagan, anyone — the freedom to worship as they chose. Not because they were enlightened. Constantine needed Christian loyalty; Licinius needed Constantine's sister. Pure politics. But the Edict's posting in Nicomedia that June ended two centuries of Christian persecution. And Licinius, who signed it, later resumed persecuting Christians anyway. Constantine eventually had him executed.

He left home at 21 thinking he'd be back in a year. Ibn Battuta never returned. What started as a hajj to Mecca stretched into 75,000 miles across 44 modern countries — more than Marco Polo ever covered. He survived shipwrecks, plague, and a sultan who nearly executed him. He married multiple times on different continents and fathered children he'd never see again. When he finally dictated his memoirs, people called him a liar. The places he described were just too strange to believe. He'd seen the world. The world wasn't ready.

The oldest military alliance still active today wasn't forged by grand diplomacy — it started as a transaction. England needed wool trade routes. Portugal needed muscle against Castile. The Treaty of Windsor in 1386 formalized it, but the friendship began with the 1373 Treaty of London, signed by Edward III and Ferdinand I. It held through Napoleon, two World Wars, and the Cold War. Britain even invoked it to use the Azores as a base in 1943. An alliance built on medieval self-interest outlasted every empire that tried to replace it.

Henry VIII built the biggest warship on Earth and named it after God. Henry Grace à Dieu — "Henry, Grace of God" — wasn't subtle. At 1,500 tons and carrying 186 guns, she was a floating declaration of ego. Built at Woolwich in 1514, she cost a fortune Henry didn't really have. But she barely fought. Spent most of her life anchored, rotting, being rebuilt. She burned in 1553 — accidentally, while being refitted. The greatest warship of her age never won a single notable battle.

In 1625, King Charles I of England married French princess Henrietta Maria de Bourbon, a union that would have significant political implications. This marriage aimed to strengthen ties between England and France but also sparked controversies and tensions within England, particularly among Puritans.

Charles I married a Catholic. In Protestant England, that wasn't romance — it was scandal. Henrietta Maria of France arrived at 15, barely speaking English, already despised by Parliament before she'd unpacked. Charles negotiated secret treaty clauses promising French Catholics protections his own subjects would never accept. The marriage was rocky for years, then became genuinely devoted. And that love story cost him everything — her influence hardened his belief that kings answered to God, not Parliament. He died on the scaffold in 1649. She outlived him by twenty years.

Oglethorpe had 2,000 men, British naval support, and every reason to believe Spanish Florida was finished. He was wrong. The Siege of St. Augustine in 1740 collapsed not from Spanish strength but from British naval commanders who refused to push their ships into the harbor — too shallow, they said, too risky. Oglethorpe retreated humiliated. Two years later, Spain hit back at the Battle of Bloody Marsh, and lost. The man who couldn't take St. Augustine ended up saving Georgia instead.

Lewis nearly wept. Standing at the Great Falls of the Missouri in June 1805, he called it "the grandest sight I ever beheld" — then realized there wasn't one waterfall. There were five, stretching across 18 miles of brutal terrain. The portage around them took 30 days instead of the expected one. Men dragged 1,000-pound canoes across cactus-covered ground in moccasins. And that "short overland route" to the Pacific? It kept getting longer. The falls were beautiful. They were also the first sign the whole theory was wrong.