Who masterminded the bolshevik take-over of power in russia in 1917 and was the architect and first head of the soviet state?
a. lenin
b. stalin
c. krupskaya
d. trotsky

A. Lenin

Explanation:

Lenin masterminded the Bolshevik take-over of power in Russia in 1917 and was the architect and first head of the Soviet state.

the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.