Why is it necessary to have a amendment process for a document?

What triumphs did the late 19th century witness in the realms of industrial growth, urbanization, and technological innovation? what challenges did these developments pose for urban dwellers, workers, and recent immigrants? how did city officials and everyday citizens respond to these challenges?

According to thomas hobbes concept of the social contract, what do people exchange for the protection by the government?

The internal combustion engine was an innovation of