States have their own constitutions, which must not contradict the Federal Constitution. County governments are organized local governments authorized in state constitutions and statutes. States justified discrimination based on state statutes and constitutions. This Constitution also contains more extensive rights than any of the previous constitutions. Several countries with liberal democratic constitutions mention socialism. Even state constitutions are subordinate to federal law. Northern states abolished slavery by law or in their new constitutions. Limitations under state constitutions vary widely. Hope of obtaining similar constitutions arose in many European states. Each state governments in Malaysia is created by the respective state constitutions. The new provisions of the state constitutions almost entirely eliminated black voting. Several state constitutions impose limitations on sales tax. I am not an advocate for frequent changes in laws and constitutions. The founding documents of many countries, including Constitutions and Law Codes, can count as literature. See a timeline of all previous constitutions and amendments here.