What is the distance and midpoint of ag if point a on the number line is at negative seven and point g on the same number line is at positive 73

What did the central and union pacific build? transcontinental railroad transcontinental highway transcontinental trail transcontinental path

What were some of the great finds that portuguese sailors discovered after prince henry established his navigational school in 1415? the gold coast and the cape verde islands gold and silver ore china the cape of good hope

Was the first african american to be appointed to the u. s. supreme court.