What was the capital of USSR ??

 This question was asked on Koun Banega Karodpati program.

Question 

What was the capital of USSR ??

Answer 

This question was not having any options.

Contestant replied    MOSCOW  !!!

It was correct answer.

But my father disagreed with the answer ....

He said  it was LENINGRAD   !!!

I searched the web.

Before 1918, capital of Russian empire was St.  Petersburg ....

Which later became Leningrad  !!!!

In 1918, Lenin moved capital to Moscow because St Petersburg was too close to enemy border.

After USSR was formed in 1922, Moscow was its capital.

Later in 1991, Leningrad was renamed as St Petersburg ......