AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
Ideology means a system of ideas reflecting a particular social and political vision.
Source: Chapter 1 – The Rise of Nationalism in Europe, New Words
The definition is given directly in the "New words" box in the chapter. In a 1-mark answer, quoting or closely paraphrasing this definition is sufficient. No elaboration is needed.