Answer:
These countries benefit from the Baltic Sea as a trading route for the rest of the world.
Step-by-step explanation:
These countries are located along the Baltic sea so this sea is used as a trading route for the rest of the world. These countries have the opportunity to trade through the Baltic sea by imports and exports of products with other countries. These countries will not depend on the lands of other countries for their trade so we can say that these countries used trading route to gain benefit from it.