International trade is the exchange of capital, goods, and services across international borders or territories because there is a need or want of goods or services.
The ancient Silk Road trade routes across Eurasia
Ports play an important role in facilitating international trade. The Port of New York and New Jersey grew from the original harbor at the convergence of the Hudson River and the East River at the Upper New York Bay.
Trade involves the transfer of goods and services from one person or entity to another, often in exchange for money. Economists refer to a system or network that allows trade as a market.
The San Juan de Dios Market in Guadalajara, Jalisco
The Liberty to Trade as Buttressed by National Law (1909) by George Howard Earle, Jr.
A busy market in Mile 12. Lagos - Nigeria
Ancient Etruscan "aryballoi" terracota vessels unearthed in the 1860s at Bolshaya Bliznitsa tumulus near Phanagoria, South Russia (formerly part of the Bosporan Kingdom of Cimmerian Bosporus, present-day Taman Peninsula); on exhibit at the Hermitage Museum in Saint Petersburg