Question

click to correct the five capitalization errors. since its completion in 1970, the aswan high dam across the nile river has provided egyptians with electricity as well as protection from floods and droughts.

Explanation:

Proper nouns like names of places and specific entities should be capitalized. "Aswan" is a place name, "River" is part of the proper - name "Nile River", and "electricity" is a common noun and should not be capitalized.

Answer:

Since its completion in 1970, the Aswan High Dam across the Nile River has provided Egyptians with electricity as well as protection from floods and droughts.