Both agriculture and transportation has a great role in the building of colonial economy.
Explanation:
In colonial economic system, cash crops are grown which provides employment to the people living in these colonies. These cash crops are transported to other areas to earn money. Transportation is also have a great importance in these colonial system due to transportation of goods from one place to another.
The Agricultural Revolution of the 18th century ignited the Industrial Revolution in Britain which at that time was a colonial authority. New agri-technology and improved livestock breeding methods led to increased food production. This created an increase in population and an improvement in health.
Transporting goods on the other hand was also made much easier by the construction of canals. In the early 18th century goods were often transported by pack horse. Many more canals were dug in the late 18th century and the early 19th century. They played a major role in the industrial revolution by making it cheaper to transport goods.