Digitalisation and Urbanisation in Tanzania: A Time-Series Analysis of Synergies and Economic Growth
This study utilizes 1990–2024 time-series data and ARDL modeling to demonstrate that digitalisation and urbanisation in Tanzania exhibit synergistic effects that mutually reinforce economic growth, with internet usage and mobile subscriptions significantly driving urban expansion while GDP per capita Granger-causes urbanisation.
Original paper licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). This is an AI-generated explanation of the paper below. It is not written or endorsed by the authors. For technical accuracy, refer to the original paper. Read full disclaimer
Cities are not just places where people live; they are engines that drive a country's economy forward. When people move from the countryside to towns and cities, they often find more jobs, better schools, and access to services that simply do not exist in rural areas. This shift, known as urbanisation, has been a powerful force for growth in many parts of the world. At the same time, another major change is reshaping how people live and work: the rapid spread of digital technology. From mobile phones to the internet, these tools connect people to information, markets, and each other. For decades, experts have studied how cities grow and how technology spreads, often treating them as separate stories. But in a country like Tanzania, these two forces are happening at the same time, raising a compelling question: do they help each other grow, or do they move along parallel tracks? Understanding this relationship is vital for leaders trying to build a future where economic progress benefits everyone, not just those in the biggest cities.
Researchers at the University of Dodoma set out to untangle this relationship using data from Tanzania spanning thirty-five years, from 1990 to 2024. They wanted to see if the rise of digital tools, such as internet access and mobile phone subscriptions, actually pulls people toward cities, or if the growth of cities simply creates the demand needed for these technologies to flourish. To do this, they gathered official statistics on how many people lived in urban areas, how many used the internet, how many owned mobile phones, and how the country's economy was performing. They also looked at factors like trade and access to electricity to ensure they were seeing the full picture. By analyzing these numbers over time, the researchers could distinguish between short-term fluctuations and long-term trends, allowing them to see how these variables influence one another over the course of decades.
The study found a clear and positive link between digitalisation and urbanisation. When internet usage in the country went up by one percent, the urban population grew by roughly 0.028 percent. Similarly, a one percent increase in mobile phone subscriptions was associated with a 0.026 percent rise in the urban population. These numbers might seem small, but they represent a consistent pattern: as digital tools become more available, cities become more attractive. The researchers suggest that this happens because digital access improves the flow of information and makes services like banking and government support easier to reach, which draws people into urban centers. The data also showed that economic growth drives this movement; when the country's wealth per person increases, more people migrate to cities in search of better opportunities.
However, the direction of this influence is not the same for every technology. The researchers discovered that while the internet and urbanisation push and pull on each other in a two-way relationship, mobile phones tell a slightly different story. The data suggests that the spread of mobile phones helps drive people toward cities, but the growth of cities does not necessarily cause an immediate increase in mobile phone adoption in the same way. This distinction is important because it shows that different digital tools play different roles in shaping where people choose to live. The study also confirmed that these relationships are stable over time, meaning they are not just temporary spikes but part of a lasting shift in how Tanzania is developing.
Despite these encouraging connections, the researchers noted that challenges remain. The benefits of digitalisation are not felt equally across the country; there is a significant gap between those who have access to technology and those who do not, often separating urban areas from rural ones. Additionally, while trade and electricity are important for development, the study found that they do not directly drive urban growth in the same reliable way that digital access does. The authors conclude that for Tanzania to continue its path toward becoming a middle-income nation, leaders should focus on integrating digital infrastructure into urban planning. This means ensuring that even smaller towns have access to high-speed internet, not just the largest cities. By bridging the digital divide and connecting rural areas to urban opportunities, the country can ensure that the growth of its cities and its technology sector work together to create a more inclusive and prosperous future for all its people.
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