The document discusses the functions of merchant ships and their role in international trade. It notes that merchant ships were important for transport in the 19th century and different types of cargo ships later developed for specific goods like oil, timber, and cement. Shipping remains the cheapest form of transport for large cargo quantities and is critical for international trade, nation building, and domestic trade in island countries. Various factors influence world trade, including economic resources, market conditions, political frameworks, technological development, and financial situations between countries.

1. By Dr. Oladokun Sulaiman Olanrewaju Introduction to Shipping and Marine Engineering

4. THE ROLE OF SHIPPING IN INTERNATIONAL TRADE PURPOSE

8. FACTOR INFLUENCING WORLD TRADE