I thought it had something to do with the significance of the year 1748. Guess I was wrong.
Events of 1748:
March 28 - a fire in the City of London causes over a million pounds worth of damage.
April - Maastricht is conquered by Maurice de Saxe.
April 24 - War of Austrian Succession: A congress assembles at Aix-la-Chapelle (Aachen) with the intent to conclude the war (treaty signed October 18).
September 24 - Shah Rukh becomes ruler of Khorasan.
October 18 - War of Austrian Succession: The Treaty of Aix-la-Chapelle is signed to end the war.
Undated
Great Britain obtains Madras, in India, from France, in exchange of the fortress of Louisbourg in Canada.
Leonhard Euler publishes Introductio in analysin infinitorum.
Montesquieu publishes De l'Esprit des lois.
Adam Smith begins to deliver public lectures in Edinburgh.
The building of Sveaborg begins near Helsinki.
Henry Fielding organizes the forerunner of the Bow Street Runners: eight men at first.
Ahmad Shah Bahadur captures Lahore.
The ruins of Pompeii are discovered.