What happened May 1900 AD

Co-organised a secret workers' mass meeting for May Day 1900, at which he successfully encouraged many of the men to take strike action. By this point, the empire's secret police—the Okhrana—were aware of Stalin's activities within Tiflis' revolutionary milieu. They attempted to arrest him in March 1901, but he escaped and went into hiding, living off the donations of friends and sympathizers.

From late May 1900, the first successes of the Boer guerrilla strategy were at Lindley (where 500 Yeomanry surrendered), and at Heilbron (where a large convoy and its escort were captured) and other skirmishes resulting in 1,500 British casualties in less than ten days.

The Relief of Mafeking on 18 May 1900 provoked riotous celebrations in Britain, the origin of the Edwardian slang word "mafficking".

On 28 May, the Orange Free State was annexed and renamed the Orange River Colony.