What causes these circular motion of air to occur​

The Movement of Air. Movement of air caused by temperature or pressure differences is wind. This is due to the rotation of the Earth beneath the moving air, which causes an apparent deflection of the wind to the right in the northern hemisphere, and left in the southern hemisphere.

there's no picture or options

but warm air rises cool falls

the answer to your question is:

strong-mayor system

soviet influence spread across eastern europe sharply during and after wwii. the soviet armies liberated the countries in eastern europe and occupied them from the germans as they were forced to retreat towards germany.