The only shape that casts a round shadow no matter which direction it is pointed is a sphere, and the ancient Greeks deduced that this must mean the Earth is spherical.
Based on the study of the behavioral pattern of the teens and as they were asked about the most influential purchase attitudes of the 54% of the teens out that they had most of the influential buying behavior seen in the United States that involve the Mexico and rest of the 50 states that those of the stats of the japan and the France and the Russia.