1830s

thumb|335x335px|From top left, clockwise: The coronation of Queen Victoria marked the beginning of her 64-year long reign. Her reign meant the revival of the [[British Empire, as the United Kingdom rapidly grew powerful territorially and economically. Under her rule, Britain saw a massive upheaval of colonial power, as over a quarter of the world fell into British rule; France's 1830 revolution reinstated liberal values – and later French imperialism – back into French governance and power. The revolution resulted in the dethroning of King Charles X and indirectly rebirthed the French colonial empire; Michael Faraday and John Daniell's studies helped form the basis of electrochemistry via the discovery of electromagnetic induction. Their discoveries moulded a huge part of contemporary chemistry, and forever changed the way people utilized electricity; HMS Beagle circumnavigates the world twice. Its second expedition with Charles Darwin has proven to be particularly pioneering, as the discoveries and theories he made on said voyage, helped him develop the theory of evolution, widely enhanced scientific consensus and knowledge on taxonomy and biology, and birthed the concept of natural selection. Slave and free states grow in number and power; a dynamic movement widely perceived as a prelude to the American Civil War as abolishment and establishment began to socio-politically polarize the United States' society, subsequently forming Union and Confederate states. The telegraph is invented by Samuel Morse. His patent opened the world to global networking and broke long distances as boundaries with it – the first of its kind; an 1832 still-life image developed by a daguerreotype. The daguerreotype was first introduced to the public in 1839. Its release made it the first invention that enabled the public to capture images on a recurrent basis – a move that would eventually nurture the growth of modern-day photography; Hans Christian Andersen publishes his first collection of fairy tales in 1837. His publications profoundly transformed literature, and grew to become one of the most popular and influential storywriters of the 19th century, with stories like The Little Mermaid (as pictured), and Thumbelina; a legacy that today retains as Denmark's national icon.]]

The 1830s (pronounced "eighteen-thirties") was the decade that began on January 1, 1830, and ended on December 31, 1839.