The legacy of Second Constitutional Era can be summarized at several points: (1) In the Second Constitutional Monarchy period, a fundamental change occurred in the conception of sovereignty. The foundations of the transition from monarchical domination to nation domination were laid down. 2) The exercise of power use based on the separation of the parliamentary regime and the powers is the legacy of this period. (3) Turkey experienced first multiparty political experience, political contestants and parties were institutionalized during this period. (4) The division of İTC-HİF also determined the line of political conflict of later periods. The division between the modernist-authoritarian line and the liberal-conservative line gained continuity. This division was reproduced at different levels in different periods. (5) The style of politics, based on the methods of oppression of İTC, led to a weak political tradition with its legal and normative dimension. An approach that reduced the politics to a power struggle that became settled. (6) Another negative aspect of the Second Constitutional Era was the politicization of the army. It is also the legacy of this period that the army was transformed into a pro-coup-overthrown political power, and beyond that it adopted this role.

The correct answer is E.