3. When did modern cities first appear?

a. Modern cities developed soon after agriculture was developed.
b. Modern cities developed once efficient transportation developed.
c. Modern cities developed from new technologies used during the Industrial Revolution.
d. Modern cities developed as a result of technological innovations developed during the Roman Empire.

c. Modern cities developed from new technologies used during the Industrial Revolution.

c. Modern cities developed from new technologies used during the Industrial Revolution.

To determine when modern cities first appeared, we can analyze the given options and consider historical context.

a. Modern cities developed soon after agriculture was developed.
While the development of agriculture was a significant milestone in human civilization, it did not directly lead to the creation of modern cities. Early agricultural societies primarily formed small settlements and villages rather than the complex urban centers we consider modern cities.

b. Modern cities developed once efficient transportation developed.
Efficient transportation systems are indeed important for the growth and development of cities. However, they are not the sole determining factor for the appearance of modern cities. Transportation advancements alone do not account for the various other technological, social, and economic factors that influence urbanization.

c. Modern cities developed from new technologies used during the Industrial Revolution.
This option holds more historical accuracy. The Industrial Revolution, which occurred in the 18th and 19th centuries, brought about significant technological advancements, such as steam power, factories, and machinery. These innovations led to the growth of industries, mass production, and urbanization. The increasing demand for labor in urban areas to support industrialization resulted in the emergence of modern cities.

d. Modern cities developed as a result of technological innovations developed during the Roman Empire.
While the Roman Empire made notable contributions to urban planning, engineering, and infrastructure, its cities were not necessarily equivalent to modern cities. The Romans did establish sophisticated urban centers, complete with roads, aqueducts, and public buildings. However, the Roman Empire declined in the 5th century, and it was not until the Industrial Revolution that cities truly began to take on the characteristics we associate with modern cities.

Therefore, option c, "Modern cities developed from new technologies used during the Industrial Revolution," is the most accurate answer.