Prime Minister: John Russell, 1st Earl Russell (Whig)
May 19
The Treaty of Guadalupe Hidalgo, ending the Mexican-American War,
is ratified by the Mexican government
May 29
Wisconsin is admitted as the 30th U.S. state.
Tue 30 May
The Prudential Mutual Assurance Investment and Loan Association is
established at Hatton Garden in London (England) to provide loans to
professional and working people, origin of the multinational life insurance
and financial services group.
Fri 2 – Mon 12 June
The Prague Slavic Congress brings together members of the Pan-Slavism movement.
June
The Serbians from Vojvodina start a rebellion against the Hungarian government.