Assimilation-oriented types of language rights refer to the aim of the law to assimilate all citizens within the country, and range from prohibition to toleration. An example of prohibition type laws is the treatment of Kurds in Turkey as well as Turks in Iran, where they are forbidden to use the Kurdish and Turkish languages respectively. Assimilation-oriented approaches to language rights can also be seen as a form of focus on the individuals right to communicate with others inside a system. Many policies of linguistic assimilation being tied to the concept of nation building and facilitating communication between various groups inside of a singular state system.