 Complete the following phrase:  The textbooks political ideas became historiographic theses and quickly turned into requirements for all the official history writing of the period. Class struggle was presented as the driving force of history, with social conflicts taken out of context and exaggerated in importance. A special case is the ancient history chapter, on Roman Dacia. There, commentators note, Roller veers into pseudohistory, creating a narrative about social revolts among the Dacians, none of which actually occurred. Historic figures were relegated to the exploitative classes, the suppression of these classes by the dictatorship of the proletariat being justified by their centuries of misdeeds. The Soviet Union was lavished with praise, the contributions of Slavs in Romanian history being highlighted, from the migratory period to the medieval period, to the 