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.

    Driving on frozen surfaces can cut the path in half. Some routes of some rivers are prepared for crossing.

Example: The surface of the Baikal usually remains frozen between January and June. At many points you can walk and even drive, but the closer it gets to mid-year, when the lake finishes thawing, the riskier it is to hike there.