Despite this, Māori frequently used the treaty to argue for a range of demands, including greater independence and return of confiscated and unfairly purchased land. This was especially the case from the mid-19th century, when they lost numerical superiority and generally lost control of most of the country and had little representation in government or the councils where decisions that impacted their affairs were made. Simultaneously, Māori rights over fisheries (guaranteed in article 2 of the treaty) were similarly degraded by laws passed in the late 19th century.