Why was a strong navy important to the Delian League in the Peloponnesian War? The island Delos was the capital of the Delian League.
A navy could cut off Sparta from mainland Greece.
Many islands made up the territories of the Delian League.
The Peloponnesian League could only attack Athens by sea.

the answer is richard nixion

the catholic church withhold people's access to the bible during the middle ages.

people could go to church and listen to the teachings, but it was absolutely forbidden to own and/or read the books of both the old and new testaments. it was also prohibited to translate the books (which where originally in biblical hebrew) to any other language.

this was done so the church could remain in control of what their teachings were and to enhance their importance and power, while also being able to judge people's actions through information that was unavailable for the general public.