The Indian law system includes legal practices and institutions of India. Indian law draws on a number of sources, beginning with the customs of the ancient Vedas and later accretions of Hindu law, which largely concern social matters such as marriage and succession. After the Arab invasions of the 8th century, Islamic law was introduced in some areas, particularly in the north. English common law became the residual law in jurisdiction under British colonial control, while the Portuguese and French used their own laws in their colonies. Since independence, India has aimed at developing a unified civil code of conduct called the Indian Penal code and has kept updating its criminal code.