<span>Abd Ar-Rahman was a Muslim conqueror and leader that created a Muslim empire in the Iberian penensula, today known as Spain and Portugal. This dynasty lasted for a long time before Christianity and the Spaniards took over.</span>
Increasing criminal punishment
Accounting regulation
New protections
According to the statement above: "Identify the portion of information that was missing during Darwin's time that fully explained variation and allowed Darwin's theory of evolution to become accepted."
The answer is: an understanding of genetics.
Hope this helps.