Which book by Charles Darwin, published in 1859, laid the foundations of modern evolutionary theory?

On the Origin of Species

"On the Origin of Species" by Charles Darwin, published in 1859, immediately stirred both admiration and controversy within the scientific community and the public. By proposing that all species of life have evolved over time from common ancestors, Darwin introduced a revolutionary concept that challenged the fundamental beliefs of the time. His methodical approach and detailed observations provided a solid foundation for the theory of evolution by natural selection, forever changing our understanding of biology. The enduring influence of this work on modern science attests to its critical importance in the history of human thought.