The house of wisdom<span> had a crucial role to play in linking the Islamic world fronts in east and west and in introducing the heritage in its perfect form to all Muslims in order to preserve it from loss and deterioration.</span>
Answer:
Cleisthenes was an ancient Athenian lawgiver credited with reforming the constitution of ancient Athens and setting it on a democratic footing in 508 BCE. For these accomplishments, historians refer to him as "the father of Athenian democracy."
It caused many people to die younger and more frequently since they didn't have immunity/vaccinations
