Question

before the 1800s, the sizes of cities were limited by:
a. population controls.
b. death rates.
c. the distances people could walk on foot.
d. the difficulty of getting fresh water.

Explanation:

Before the 1800s, transportation was mainly on foot. People needed to be close to their work, resources, and services. The maximum distance people could walk on foot restricted the spread - out nature of cities, thus limiting city sizes. Population controls were not a major factor at that time. Death rates, while they affected population numbers, were not the primary limit on city sizes. Difficulty in getting fresh water was an issue but not the most limiting factor compared to walking distances for the overall size of a city.

Answer:

C. The distances people could walk on foot.