Answer:
Census
Explanation:
A census is the process of data collection and is the systematic acquisition of data about the given population.
a solar eclipse, when the moons shadow comes between the sun and earth
The last statement is the correct answer. However, the second question is theoretically historically correct, for Иосиф Сталин (Joseph Stalin) practically controlled the entire government of the USSR with his oppressive ultra-authoritarian non-democratic Stalinist-"Communist" regime.