You need to specify which two cities you are referring to if you want to make it possible to answer your question.
Venice was one of the two Italian cities that monopolized trade with the far east.
The two factors that contributed to Egypt's wealth during the New Kingdom were conquest and trade.I believe two factores contributed to Egypts wealth during the New Kingdom were the conquest and trading.
The Ming dynasty created and expanded trade networks across Asia.
Industrial cities differ from preindustrial cities primarily in their scale and economic focus. Industrial cities are characterized by large populations and a concentration of factories and manufacturing jobs, leading to urbanization and diverse economic activities. In contrast, preindustrial cities were smaller, often centered around agriculture and trade, with economies largely based on local resources and craftsmanship. Additionally, industrial cities typically have more complex infrastructure, including transportation systems and utilities, to support their larger populations and industrial activities.
The fertility and water of the two rivers - Euphrates and Tigris - gave a surplus of food, a base for trade and population growth which led to the establishment of cities and the development of civilisation.
two ways Sumerian cities were governed
Venice was one of the two Italian cities that monopolized trade with the far east.
A city around the St. Lawrence River would be a possible answer. Sorry I don't know any cities around there. I would say mainly Panama Canal cities or St. Lawrence Seaway, because those water ways are important to trade.
public/ trade and private
Cities in which country or region? There are hundreds or even thousands of cities which could reasonably be called ancient, and you can bet that most of them were on trade routes. Cities existed then, and still mostly do now, because they were centers for trade. Go pick any two old cities reasonably near each other, you can be sure they had a trade route between them (unless they had some barrier like impassible mountains in between).
They made both cities two important harbours for trade
People and ideas also end up being exchanged when distant cities trade products.
The purpose of the GATT was to liberalize trade and to negotiate trade concessions among member countriers
The Telegraph and the railroads
Trust and belief
The two I know of for sure ar Manchester and Liverpool
Genoa and Venice