Events January–March January 23 – (January 12 Old Style) The Conventicle Act (Konventikelplakatet) is adopted in Sweden, outlawing all non-Lutheran religious meetings outside of church services. January 26 – The First Treaty of Vienna is signed between Austria, the Holy Roman Empire and Spain, creating the Austro-Spanish Alliance in advance of a war against Great Britain. January 27 – On its maiden voyage, the Dutch East India Company frigate Aagtekerke departs from the Dutch Cape Colony on the second leg of its journey to the Dutch East Indies and is never seen again. Aagtekerke had carried with it a crew of 200 men and was lost somewhere in the Indian Ocean. February 8 – The Supreme Privy Council is established in Russia. February 13 – The Parliament of Negrete (between Mapuche and Spanish authorities in Chile) brings an end to the Mapuche uprising of 1723–26. March 10 – China's Emperor Yongzheng issues a special edict instructing his "Vice Minister of Punishments" Huang Bing to interrogate Qin Daoran, who provides the evidence that Yongzheng's brothers Yintang, Yin-ssu and Yin-ti, had conspired to overthrow the Emperor. March 29 – The first large shipment of slaves arrives in New Orleans as the slave ship L'Aurore arrives with 290 black people captured in Gambia. During the 90-day voyage from Gorée in Senegal, 60 of the slaves had died. March 30 – After King Haffon of the West African Kingdom of Whydah (now in Benin) allows Portuguese traders to build Fort São João Batista in the capital at Savi, mercenaries of the Dutch West India Company make a failed attempt to destroy the fort by "throwing two flaming spears over the walls". By 1726, traders from Britain, France, the Netherlands and Portugal are all competing to establish trade with Whydah, which supplies other West Africans to be used as slaves. March 31 – France's first ambassador to Russia, Jacques de Campredon, leaves after four years of trying to negotiate a Franco-Russian alliance with Catherine I and a failed attempt to arrange a marriage between King Louis XV and Catherine's daughter Elizabeth. April–June May 1 – Voltaire begins his exile in England. June 11 – Louis Henri, Duke of Bourbon, is dismissed from being the Prime Minister of France and Jean Pâris de Monmartel is removed from his position as Guard of the Royal Treasury by King Louis XV. The King selects his former tutor, André-Hercule