Explanation:
A beach forms when waves deposit sand and gravel along the shoreline. and pebbles. Over time they are worn smooth from being rolled around by waves. The rocks usually reflect the local geology.
To rule the vast territory, the Qin instituted a rigid, authoritarian government; they standardized the writing system, standardized the measurements of length and weight and the width of highways, abolished all feudal privileges, oversaw large-scale construction of what then became the first Great Wall.
