Answer:
The improvement on road network and consequent industrialization in cities led to increase in urbanization.
Step-by-step explanation:
By the beginning of the 18th century, less than 10 percent of the population of the world were found in cities. When the industrial era set in, cities began to grow at a faster rate and they became a hub for population and industrial productions.
The United Sates of America oversaw the construction of railroads that ultimately led to the reduction of transportation costs on goods and more production centers began to spring up in the country