A trading port that is usable year round because it never freezes. The Russian coastline, for example, it so far north that the port cities are frozen for a large part of the year, making them useless. When trading via water became an economic priority, Russia had adopt foreign policies--such as imperialism--to try to take over areas with ports that were usable year round.

1.
A trading port that is usable year round because it never freezes. The Russian coastline, for example, it so far north that the port cities are frozen for a large part of the year, making them useless. When trading via water became an economic priority, Russia had adopt foreign policies--such as imperialism--to try to take over areas with ports that were usable year round.

Universal Declaration of Human Rights
warm-water port
five-year plans
Spice trade