Answer :

Final answer:

The work of two naturalists, Charles Darwin and Alfred Russel Wallace, independently converged on the theory of evolution by natural selection. A manuscript from Wallace in 1858 spurred Darwin to publish his detailed arguments the following year in 'On the Origin of Species'. Both presented their theories to the Linnean Society of London.

Explanation:

In the mid-nineteenth century, Charles Darwin and Alfred Russel Wallace independently conceived of and described the mechanism for evolution. Both were naturalists who spent considerable time exploring the natural world on various expeditions. Darwin traveled around the world on H.M.S. Beagle from 1831 to 1836, during which he visited the Galápagos Islands and observed distinct species that were clearly similar, yet had unique differences.

When a manuscript by Wallace proposing a similar theory arrived in Darwin’s hands in 1858, this acted as the catalyst for Darwin to publish his encompassing work. They presented their papers discussing the idea of natural selection before the Linnean Society in London that same year. The next year, Darwin published his famous and extensive work, 'On the Origin of Species', which outlined his arguments for natural selection and evolution.

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