Why is Hydel power considered a conventional source of energy?

Hydropower plants convert the potential energy of falling water into electricity. This is a traditional source of energy

hope this helps

Hydel power is a conventional source of energy because it can get exhausted after some years as it is dependent on building of dams.

in 342 bc j._c. egypt fell into the hands of the persians, under the reign of nectanebo ii

greek city-states unite in a revolt against the persian empire at the beginning of the fifth century bc. j.-c  

from the year 660 or 659 bc ad, cyrus preached the revolt against the medes to deliver the persians.

i’m   sure probably just geuss and see which one you can get right, i’m pretty sure it is the combination of goods and services