In the second half of the 19th century, Bahá'u'lláh founded the Baháʼí Faith, a religion which identified the establishment of world unity and a global federation of nations as a key principle. He envisioned a set of new social structures based on participation and consultation among the world's peoples, including a world legislature, an international court, and an international executive empowered to carry out the decisions of these legislative and judicial bodies. Connected principles of the Baháʼí religion include universal systems of weights and measures, currency unification, and the adoption of a global auxiliary language.