a); and c). During Chandragupta II reign, great impulse was given to arts and science. One of the main scholars of the time was Aryabhata, who came up with the concept of zero and discovered the ratio of pi. He also worked in demonstrating that the earth moves around the sun instead of otherwise.
That was the Gettysburg address because the Gettysburg battle was very violent and hit hard toll on the north
In the treaty, Britain and the United States agreed to joint control of Oregon Country.
