In which year did the annexation of Awadh by Lord Dalhousie take place?

Awadh was annexed by the British East India Company under the administration of Governor-General Lord Dalhousie in February 1856. The annexation was carried out on the pretext of alleged misgovernance and maladministration under Nawab Wajid Ali Shah. This arbitrary takeover caused widespread resentment and became a major contributing factor to the Revolt of 1857.