WEEKLY PUZZLES · MAY 10

Nelson Mandela sworn in as South Africa's President

A swearing-in at the Union Buildings marked a decisive shift in South Africa's political order. The ceremony carried legal weight as well as public symbolism.

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Nelson Mandela at his 10 May 1994 presidential inauguration at the Union Buildings in Pretoria, following South Africa's first national election under universal suffrage.
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Haymarket Square in Chicago during the labor meeting of May 4, 1886, linked to the eight-hour workday campaign and the violence that followed.

Haymarket Square Rally Turns Deadly in Chicago

A public meeting in Chicago seemed to be winding down—then a single explosive act changed labor history and legal…
Alan Shepard during the Mercury-Redstone 3 mission, the first U.S. human spaceflight, launched from Cape Canaveral on 5 May 1961.

Alan Shepard's Freedom 7 flight

A brief arc above Earth changed the standing of an entire space program. One capsule, one pilot, and almost no margin…
Roger Bannister at Iffley Road in Oxford, where he ran the mile in 3:59.4 on 6 May 1954 under official competition conditions.

Roger Bannister breaks the four-minute mile

A measured mile in Oxford turned on pace, timing, and a few decisive laps. One official result changed the language of…
RMS Lusitania, a British ocean liner, was sunk by the German submarine U-20 off the Old Head of Kinsale, Ireland, on 7 May 1915.

RMS Lusitania Sunk off the Irish Coast

A fast Atlantic crossing ended in minutes off County Cork. The sinking of RMS Lusitania changed more than one voyage.
World Health Assembly delegates in Geneva as WHO formally declared smallpox eradicated worldwide on 8 May 1980.

World Health Assembly Declares Smallpox Eradicated

A disease feared for centuries was declared gone worldwide in Geneva. The harder task was proving that it had truly…
Representatives of the German High Command and Allied commanders at the final surrender ceremony in Berlin-Karlshorst on 9 May 1945.

German Surrender Act Signed in Berlin-Karlshorst

A surrender document signed after midnight in Berlin helped fix the end of the war in Europe—and shaped how different…
Nelson Mandela at his 10 May 1994 presidential inauguration at the Union Buildings in Pretoria, following South Africa's first national election under universal suffrage.

Nelson Mandela sworn in as South Africa's President

A swearing-in at the Union Buildings marked a decisive shift in South Africa's political order. The ceremony carried…