john brown is the man on the wagon with the gun
Roman concrete is in some ways stronger than modern concrete. The Romans used volcanic ash and rocks, limestone, and water to produce extremely durable concrete. This also prevented cracks from spreading in the concrete which is why their concrete is still in shape to this day.
The construction of the Transcontinental Railroad greatly benefited the ranching industry.
C, a plateau period is when you reach a nonmoving or even declining point