What was the relation between ideology and organisation in the global expansion of communist parties?

Correct answer: Ideology gave goals and organisation gave them political form

Ideology and organisation perform different but connected functions in a political movement. Ideology explains the movement’s values, identifies the problems it wants to change, and sets goals such as equality or workers’ power. Organisation turns those goals into practical political activity by gathering members, communicating ideas, training activists, making decisions, and coordinating campaigns. Without an organising structure, ideas may remain scattered; without guiding ideas, an organisation may lack a clear purpose.

Option A is correct because it distinguishes the goal-setting role of ideology from the action and coordination role of organisation. The other choices are inconsistent with the historical expansion of communist parties: organisation did not end socialism, ideology was not merely a royal preference, and organisation clearly mattered for spreading movements across countries. Their relationship explains how a belief system could become a sustained political force rather than remain only an abstract theory.