What did Lenin die from?

On 21 January 1924, at 18:50 EET, Vladimir Lenin, leader of the October Revolution and the first leader and founder of the Soviet Union, died in Gorki aged 53 after falling into a coma. The official cause of death was recorded as an incurable disease of the blood vessels.

it would be  

germany had to pay all damages related to the war.

and i think

germany had to take sole responsibility for the war.