Why did all the TV's turn off on August 29 1968? correct gets brainiest and plus 50 points for both

What project establish leonardo da vincis reputation as a creative and talented engineer

How were the economies of the inca empire and ancient river valley civilizations such as egypt and phoenicia different?

The square pyramid below has a height of 12 centimeters and a slant height of 20 centimeters. the square base of the pyramid has side lengths of 32 centimeters. what is the lateral area of the pyramid? 384 cm2 640 cm2 768 cm2 1280 cm2