What new features in trade appeared in the second half of the 18th century?

Speaking specifically about Russia, foreign trade has become a new feature. In the 18th century, foreign trade occupied a very large part of the country’s budget, and all because new ports were built on the Baltic and Black Sea, and this led to the emergence of new opportunities for the supply of goods to other countries. In addition, during this period, the construction of a railway began, which further increased trade with neighboring countries. They actively exported metal, grain, timber.