Why was the electrification known as “the most important engineering achievement of the 20th century”?

It was the most important because it brought light in the world and at night time.

Explanation:

apartheid, (afrikaans: “apartness”) policy that governed relations between south africa's white minority and nonwhite majority and sanctioned racial segregation and political and economic discrimination against nonwhites. people should not get this wrong. i was just answering a question.

studies show tha in 7.5 billion years from now, the expanding sun will engulf, and destroy, the earth.