AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
Option A — Both A and R are true, and R is the correct explanation of A. After 1848, autocratic monarchies abolished serfdom because they realised revolution cycles could only end by conceding to liberal-nationalist demands.
Source: Chapter 1, Section 4 (The Making of Germany and Italy)
The passage explicitly states that monarchs realised "cycles of revolution and repression could only be ended by granting concessions to the liberal-nationalist revolutionaries," and therefore serfdom/bonded labour were abolished in Habsburg dominions and Russia. R directly explains why A happened, making Option A correct.