January 1 – New York City annexes The Bronx.
January 2 – Ignacio María González becomes head of state of the Dominican Republic for the first time.
January 3 – Third Carlist War: Battle of Caspe – Campaigning on the Ebro in Aragon for the Spanish Republican Government, Colonel Eulogio Despujol surprises a Carlist force under Manuel Marco de Bello at Caspe, northeast of Alcañiz. In a brilliant action the Carlists are routed, losing 200 prisoners and 80 horses, while Despujol is promoted to Brigadier and becomes Conde de Caspe.
January 20 – The Pangkor Treaty (also known as the Pangkor Engagement), by which the British extend their control over first the Sultanate of Perak, and later the other independent Malay States, is signed.
January 23 – Prince Alfred, Duke of Edinburgh, second son of Queen Victoria, marries Grand Duchess Maria Alexandrovna of Russia, only daughter of Tsar Alexander III of Russia, in the Grand Church of the Winter Palace in Saint Petersburg.
February 21 – The Oakland Daily Tribune publishes its first issue in California.
February 23 – Walter Clopton Wingfield patents in Britain a game called "sphairistike", which is more commonly called lawn tennis.
February 24–25 – Third Carlist War: First Battle of Somorrostro – Determined to raise the siege of Bilbao by the Pretender Don Carlos VII, Republican commander Marshal Francisco Serrano sends General Domingo Moriones with a relief force of 14,000 men. Carlists, under General Nicolás Ollo, entrenched at Somorrostro outside Bilbao, drive back a courageous assault by General Fernando Primo de Rivera and then the entire Republican army. The republicans lose 1,200 men, and Moriones loses his nerve, demanding reinforcements and a replacement for himself. Moriones's men entrench and wait.
March 14 – Third Carlist War: Battle of Castellfollit de la Roca – Appointed to command the Spanish Republican army in the north, General Ramón Nouvilas attempts to relieve the Carlist siege of Olot in Girona.