Why were some colonies dependent on others for for transporting the products that they wanted to buy or sell abroad?

Some colonies were dependent on others for transportation of products due to limited infrastructure and resources, which made it difficult for them to develop their own shipping capabilities. Additionally, geographical barriers and lack of navigable waterways often necessitated reliance on larger, more developed colonies or metropolitan powers for the transport of goods. This dependency was further reinforced by trade regulations and monopolies established by colonial powers, which prioritized certain routes and markets. As a result, the economic prosperity of these colonies was closely tied to their relationships with others that had more robust transport systems.