The Constitution of South Africa is the supreme rule of law in the country. The primary sources of South African law are Roman-Dutch mercantile law and personal law and English Common law, as imports of Dutch settlements and British colonialism. The first European based law in South Africa was brought by the Dutch East India Company and is called Roman-Dutch law. It was imported before the codification of European law into the Napoleonic Code and is comparable in many ways to Scots law. This was followed in the 19th century by English law, both common and statutory. After unification in 1910, South Africa had its own parliament which passed laws specific for South Africa, building on those previously passed for the individual member colonies.