In the economic sphere, 'Liberalism' stood for the freedom of market and the abolition of state-imposed restrictions on the movement of goods and capital. Duties were levied according to the weight or measurement of the goods which were different for different states. Liberalisation meant reduction of custom duties and removal of these quotas. A unified economic territory allowing the unhindered movement of goods, people and capital was the need of the hour. In 1834, Zollverein, a customs union abolished tariff barriers and reduced the number of currencies from over thirty to two. This was the main concept of Liberalisation prevalent in the 19th century in Europe.