1861
States meet to form Confederacy

In Montgomery, Alabama, delegates from South Carolina, Mississippi, Florida, Alabama, Georgia, and Louisiana convene to establish the Confederate States of America.

As early as 1858, the ongoing conflict between the North and the South over the issue of slavery led the Southern leadership to discuss a unified separation from the United States. By 1860, the majority of the slave states were publicly threatening secession if the Republicans, the anti-slavery party, won the presidency. Following Republican Abraham Lincoln’s victory over the divided Democratic Party in November 1860, South Carolina immediately initiated secession proceedings. On December 20, its legislature passed the “Ordinance of Secession,” which declared that “the Union now subsisting between South Carolina and other states, under the name of the United States of America, is hereby dissolved.” After the declaration, South Carolina set about seizing forts, arsenals, and other strategic locations within the state. Within six weeks, five more Southern states had followed South Carolina’s lead.

In February 1861, representatives from the six seceded states met in Montgomery, Alabama, to formally establish a unified government, which they named the Confederate States of America. On February 9, Jefferson Davis of Mississippi was elected the Confederacy’s first president.

By the time Abraham Lincoln was inaugurated in March 1861, Texas had joined the Confederacy, and federal troops held only Fort Sumter in South Carolina, Fort Pickens off the Florida coast, and a handful of minor outposts in the South. On April 12, 1861, the American Civil War began when Confederate shore batteries under General P.G.T. Beauregard opened fire on Fort Sumter in South Carolina’s Charleston Bay. Within two months, Virginia, Arkansas, North Carolina, and Tennessee had all joined the embattled Confederacy.

1812
Earthquake causes fluvial tsunami in Mississippi

On this day in 1812, the most violent of a series of earthquakes near Missouri causes a so-called fluvial tsunami in the Mississippi River, actually making the river run backward for several hours. The series of tremors, which took place between December 1811 and March 1812, were the most powerful in the history of the United States.

The unusual seismic activity began at about 2 a.m. on December 16, 1811, when a strong tremor rocked the New Madrid region. The city of New Madrid, located near the Mississippi River in present-day Arkansas, had about 1,000 residents at the time, mostly farmers, hunters and fur trappers. At 7:15 a.m., an even more powerful quake erupted, now estimated to have had a magnitude of 8.6. This tremor literally knocked people off their feet and many people experienced nausea from the extensive rolling of the earth. Given that the area was sparsely populated and there weren’t many multi-story structures, the death toll was relatively low. However, the quake did cause landslides that destroyed several communities, including Little Prairie, Missouri.

The earthquake also caused fissures–some as much as several hundred feet long–to open on the earth’s surface. Large trees were snapped in two. Sulfur leaked out from underground pockets and river banks vanished, flooding thousands of acres of forests. On January 23, 1812, an estimated 8.4-magnitude quake struck in nearly the same location, causing disastrous effects. Reportedly, the president’s wife, Dolley Madison, was awoken by the tremor in Washington, D.C. Fortunately, the death toll was smaller, as most of the survivors of the first earthquake were now living in tents, in which they could not be crushed.

The strongest of the tremors followed on February 7. This one was estimated at an amazing 8.8-magnitude and was probably one of the strongest quakes in human history. Church bells rang in Boston, thousands of miles away, from the shaking. Brick walls were toppled in Cincinnati. In the Mississippi River, water turned brown and whirlpools developed suddenly from the depressions created in the riverbed. Waterfalls were created in an instant; in one report, 30 boats were helplessly thrown over falls, killing the people on board. Many of the small islands in the middle of the river, often used as bases by river pirates, permanently disappeared. Large lakes, such as Reelfoot Lake in Tennessee and Big Lake at the Arkansas-Missouri border, were created by the earthquake as river water poured into new depressions.

This series of large earthquakes ended in March, although there were aftershocks for a few more years. In all, it is believed that approximately 1,000 people died because of the earthquakes, though an accurate count is difficult to determine because of a lack of an accurate record of the Native American population in the area at the time.

Actually "Deep Blue" didn't win Kasparov, as it was some other chess master making a move for "Deep Blue": http://time.com/3705316/deep-blue-kasparov/

But OK. ;)

GeraldRube, you took care of The Daily Danish for a while, so let me give a history lesson
1885
Washington Monument dedicated
The Washington Monument, built in honor of America’s revolutionary hero and first president, is dedicated in Washington, D.C.
The 555-foot-high marble obelisk was first proposed in 1783, and Pierre L’Enfant left room for it in his designs for the new U.S. capital. After George Washington’s death in 1799, plans for a memorial for the “father of the country” were discussed, but none were adopted until 1832 – the centennial of Washington’s birth. Architect Robert Mills’ hollow Egyptian obelisk design was accepted for the monument, and on July 4, 1848, the cornerstone was laid. Work on the project was interrupted by political quarreling in the 1850s, and construction ceased entirely during the American Civil War. Finally, in 1876, Congress, inspired by the American centennial, passed legislation appropriating $200,000 for completion of the monument.
In February 1885, the Washington Monument was formally dedicated, and three years later it was opened to the public, who were permitted to climb to the top of the monument by stairs or elevator. The monument was the tallest structure in the world when completed and remains today, by District of Columbia law, the tallest building in the nation’s capital.

It doesn't say that in your link.