Some rivers and seaports in Russia can freeze for six to nine months out of the year. Predict how this could affect trade and travel in Russia and how Russians may try to overcome this obstacle.

baltic states. baltic states, northeastern region of europe containing the countries of estonia, latvia, and lithuania, on the eastern shores of the baltic sea.

explanation:

answer; gravity pulls glaciers down hill and as glaciers flow it pick up rocks and soil;

answer; creep;