Non sequitur. How long has the Theory of Evolution existed? Not centuries.
You are incorrect.
It is true that Darwin's book was published in 1859, a mere century and a half ago, but the foundations date back father than that.
Darwin, like all good scientists, built upon the work of those who had come before. One of those forerunners was Darwin's grandfather Erasmus Darwin, whose work "Zoönomia" (1976) started to lay the specific foundation of the ToE. Another was Jean-Baptiste Lamarck, who was publishing his work in the early 1800s, over two hundred years ago.
Heck, even Aristotle had speculated about evolution. So yes, "centuries" is appropriate.
If you are under the mistaken impression that Darwin and Darwin alone is responsible for the entirety of the Theory of Evolution, your understanding of the subject is limited indeed.
If you are furthermore under the impression that engaging in a puerile semantic debate will divert attention away from that ignorance, then you are once again mistaken.
"It is true that Darwin's book was published in 1859, a mere century and a half ago, but the foundations date back father than that."
You're engaging in the historicism that was being mocked just upthread. Darwin apparently IS omnipresent and eternal, praise be! Either that, or you're seeking to diminish the importance of Darwin in authoring the theory of evolution, for the petty reason of covering for your own historical error.
Either the publishers were real slow, or old Erasmus was still writing at a goodly age. (Do you know if he is still living?)