WHAT HAPPENED IN 1866.
Look what happened the 1866.

Memorial Day first celebrated in United States at Waterloo, New York. (5. May 1866)

The first permanent transatlantic telegraph cable is successfully completed, stretching from Valentia Island, Ireland, to Heart's Content, Newfoundland. (27. July 1866)

President Andrew Johnson formally declares the American Civil War over. (20. August 1866)

The Royal Aeronautical Society is formed in London. (12. January 1866)

Austro-Prussian War: Battle of Lissa – The Austrian Navy , led by Admiral Wilhelm von Tegetthoff, defeats the Italian Navy near the island of Vis in the Adriatic Sea. (20. July 1866)

The American Society for the Prevention of Cruelty to Animals (ASPCA) is founded in New York City by Henry Bergh. (10. April 1866)

The United States Congress passes legislation authorizing the rank of General of the Army. Lieutenant General Ulysses S. Grant becomes the first to be promoted to this rank. (25. July 1866)

The Grand Army of the Republic, an American patriotic organization composed of Union veterans of the American Civil War, is founded. It lasts until 1956. (6. April 1866)

The Grand Duchy of Baden announces her withdrawal from the German Confederation and signs a treaty of peace and alliance with Prussia. (17. August 1866)

Austro-Prussian War ends with the Treaty of Prague. (23. August 1866)

Miners in Calaveras County, California, discover what is now called the Calaveras Skull - human remains that supposedly indicated that man, mastodons, and elephants had co-existed. (25. February 1866)

Reconstruction: Tennessee becomes the first U.S. state to be readmitted to the Union following the American Civil War. (24. July 1866)

Venice - Annexion of Veneto and Mantua to Italy - At Hotel Europa, Austria hands over Veneto to France, which hands it immediately over to Italy. (19. October 1866)

Wesley College, Melbourne is established. (18. January 1866)

Battle of Curupaity in the Paraguayan War. (22. September 1866)

New Orleans, Louisiana's Democratic government orders police to raid an integrated Republican Party meeting, killing 40 people and injuring 150. (30. July 1866)

Fenian raids: the Fenians are victorious over Canadian forces in both the Battle of Ridgeway and the Battle of Fort Erie. (2. June 1866)

The Fenians are driven out of Fort Erie, Ontario, into the United States. (3. June 1866)

A plebiscite ratifies the annexion of Veneto and Mantua to Italy, occurred three days before, on October 19. (22. October 1866)

Peruvian defenders fight off the Spanish fleet at the Battle of Callao. (2. May 1866)