Factoids:

1) Marx and Engel did not approve of the Russian Revolution.
They did not believe that Russia was industrialized enough nor
economically developed enough for the task of their communism.(Marx1)

2) For what Marx and Engel had in mind they were looking at Nations
like Germany, France, and England.(Engel1)

3) The soviet union was a massive nation spanning 8,649,537 Square Miles.(wiki1)
Making it by far the single largest nation in the world. So large it is about the
size of the North American continent. It had a population of 294,000,000(wiki1).
Russia (RSFSR) itself had a population of 194,000,000(danks1).

4) USSR spanned 8 time zones:

Map by the CIA