art and Literature and the continuing evolution in the role of religion in Western societies. Napoleon re-established the Catholic Church in France through the Concordat of 1801. The end of the Napoleonic wars, signaled by the Congress of Vienna, brought Catholic revival and the return of the Papal States. In 1801, a new political entity was formed, the United Kingdom of Great Britain and Ireland, which merged the kingdoms of Great Britain and Ireland, thus increasing the number of Catholics in the new state. Pressure for abolition of anti-Catholic laws grew and in 1829 Parliament passed the Roman Catholic Relief Act 1829, giving Catholics almost equal civil rights, including the right to vote and to hold most public offices. While remaining a minority religion in the British Empire, a steady stream of new Catholics would continue to convert from the Church of England and Ireland, notably John Henry Newman and the poets Gerard Manley Hopkins and Oscar Wilde. The Anglo-Catholic movement began, emphasizing the Catholic traditions of the Anglican Church. New churches like the Methodist, Unitarian, and LDS Churches were founded. Many Westerners became less religious in this period, although a majority of people still held traditional Christian beliefs. The 1859 publication of On the Origin of Species, by the English naturalist Charles Darwin, provided an alternative hypothesis for the development, diversification, and design of human life to the traditional poetic scriptural explanation known as Creationism. According to Darwin, only the organisms most able to adapt to their environment survived while others became extinct. Adaptations resulted in changes in certain populations of organisms which could eventually cause the creation of new species. Modern genetics started with Gregor Johann Mendel, a German-Czech Augustinian monk who studied the nature of inheritance in plants. In his 1865 paper "Versuche über Pflanzenhybriden" ("Experiments on Plant Hybridization"), Mendel traced the inheritance patterns of certain traits in pea plants and described them mathematically. Louis Pasteur and Joseph Lister made discoveries about bacteria and its effects on humans. Geologists at the time made discoveries indicating the world was far older than most believed it to be. Early batteries were invented and a telegraph system was also invented, allowing global communication. In 1869 Russian chemist Dmitri Mendeleev published his Periodic table. The success of Mendeleev's table came from two decisions he made: The first was to leave gaps in the table when it seemed that the corresponding element