Using the provided map and legend, identify the different routes and their corresponding descriptions.

Map Analysis:

The map displays historical routes and boundaries within the Russian Empire. Based on the legend and visual cues, the following can be identified:

• Red Solid Line: Represents the 'граница Российской империи в 1900 году' (Border of the Russian Empire in 1900).
• Dotted Red Line: Represents the 'граница Российской империи к концу XVIII века' (Border of the Russian Empire by the end of the 18th century).
• Black Solid Line: Represents the 'Транссибирская магистраль' (Trans-Siberian Railway).
• Dotted Black Line: Represents the 'первая российская железная дорога' (The first Russian railway).

The map also shows various cities and geographical features such as rivers (e.g., Лена, Иртыш, Обь, Дон, Волга) and seas (e.g., ЧЁРНОЕ МОРЕ, БАЛТИЙСКОЕ МОРЕ, КАСПИЙСКОЕ МОРЕ, ОХОТСКОЕ МОРЕ, БЕРИНГОВО МОРЕ).