It's mostly because the materials used when building the Pyramids of Egypt were stone, whereas the materials used during the building of the Ziggurats of Mesopotamia were mud bricks.
Both skilled and non-skilled workers composed the majority of the population who lived in poverty during the Victorian Era in England. This was because the increase in urbanization was at its peak where a lot of workers are required to render their services, as a result of this demand, they were paid little and were exposed to unsanitary working conditions.
Boats is the answer I got