Answer:
cause-effect
Step-by-step explanation:
According to the passage from "Stalin: A Brutal Legacy Uncovered, the story of Joseph Stalin, the brutal Communist leader of Russia is told.
Cause-effect is the text structure used in the informational text about Stalin's atrocities and how he used ambition and fear to rule over people of the Soviet Union.
This is because, according to the informational text, the cause and effect of what Stalin turned out to be, is explained from his experiences in his childhood and early adulthood.