Darwin's theory caused many changes in the world. His theory was published on his book "On the origin of species" in 1859. His theory caused many controversies among scientists and the church. From Darwin's ideas, many thinkers based their own ideas creating social Darwinism. His theory caused hundreds of new discoveries, and it is still not completely proved today. Darwin's idea caused great controversy, even today, changing the way people think of religion and prehistory.

Darwin's theory was first published in 1859. His theory was mainly developed after he made many observations of birds at different islands in the Galapagos Islands. In his observation he saw many different animal species looked as if they were closely related, but noticed they were adapted to its surroundings, such as birds with big and strong beaks on islands with abundant trees which had seeds covered by hard shells. He reasoned animals more adapted...