Reconstruction

English Wikipedia has an article on:

Reconstruction era of the United States

Wikipedia

A proper-noun variant of reconstruction.

Reconstruction or the Reconstruction

1. A period of the history of the United States from 1865 to 1877, during which the nation tried to resolve the status of the ex-Confederate states, the ex-Confederate leaders, and the Freedmen (ex-slaves) after the American Civil War.

   Fables of the Reconstruction

• When contextually referred to directly as a time period, the definite article is more commonly used; as opposed to when the linguistic context is ‘the process of rebuilding’, in which it is more common to use no article. However, these rules are not very rigidly followed, and article usage varies significantly by speaker.