Answer:
Romans discovered that when the lens with thin edges and thick center is placed over the objects, the object becomes magnified. Thus Romans discovered magnification as they experimented with lenses.
Explanation:
During the 1st century AD (year 100), glass had been invented and the Romans were looking through the glass and testing it. They experimented with different shapes of clear glass and one of their samples was thick in the middle and thin on the edges. They discovered that if you held one of these “lenses” over an object, the object would look larger.
A natural advantage the kingdoms of West Africa had was an abundance of natural resources including salt and gold.
establishment of the U.S. Department of Labor
The answer is going to be A
