Maritime trade and naval economics

What do you think of pre-maritime trade?

Maritime trade is easy to forget until disruption reveals it because passengers no longer travel alongside most cargo, even though goods still move slowly by sea.

Maritime trade is easy to overlook until an accident or disruption makes it visible. Modern air travel differs from earlier journeys by ship, when passengers shared vessels and routes with cargo moving around the world. Air travel makes movement appear quick, while much freight still travels slowly by sea and remains out of public view. This contrast explains why interruptions to merchant shipping can have consequences far beyond the ships directly involved.