These are the cities linking the south to the Trans-Siberian railways. Match the cities with their respective countries:
| City | Country |
| 1. Odessa | a. Mongolia |
| 2. Ulan Bator | b. Uzbekistan |
| 3. Shenyang | c. Ukraine |
| 4. Tashkent | d. China |
Answer & explanation
Correct answer: option 4
These are connecting links to the south of the Trans-Siberian Railways namely, to Odessa (Ukraine), Baku on the Caspian Coast, Tashkent (Uzbekistan), Ulan Bator (Mongolia), and Shenyang (Mukden) and Beijing in China.