Tuesday, July 6, 1875

Gunmen attacked a secondary school in Mamudo, Yobe State, Nigeria, killing 42 people, mostly students.

In the first fatal accident involving a Boeing 777 airliner, Asiana Airlines Flight 214 (wreckage pictured) crashed on final approach to San Francisco International Airport, resulting in three deaths.

Jadranka Kosor became the first female prime minister of Croatia.

A gunman killed an 18-year-old man and injured six other people in a mass shooting on Cabildo Avenue in Buenos Aires, Argentina.

The Troubles: In response to the Drumcree conflict, five days of unrest began in nationalist districts of Northern Ireland.

A Palestinian Islamic Jihad member carried out a suicide attack by hijacking a bus and forcing it into a ravine near Kiryat Ye'arim, Israel.

After visiting several Asian communist countries, Romanian leader Nicolae Ceaușescu (pictured) gave a speech on a number of neo-Stalinist and socialist-realist ideals, which became known as the July Theses.

Second World War: After a three-month siege, the Italian garrison of Saïo (in modern-day Ethiopia) surrendered to Belgian, British and Ethiopian troops.

The Story Bridge in Brisbane, the longest cantilever bridge in Australia, was opened by Sir Leslie Wilson, Governor of Queensland.

A major breach of the Manchester Bolton & Bury Canal in England sent millions of gallons of water cascading 300 feet (90 m) into the River Irwell.

First World War: Russian troops won a victory in the Battle of Kostiuchnówka, with the Polish Legions playing a key role on the Austro-Hungarian side.

First World War: The British and French prime ministers, H. H. Asquith and René Viviani, met at Calais to discuss future offensives including the Gallipoli campaign.