Ius trium liberorum – “law of three children”
Ius trium liberorum (“law of three children”) was a privilege introduced by Emperor Augustus (ruled 27 BCE – 14 CE) as part of his social and demographic reforms. Its aim was to increase the number of births in the Roman state, which was struggling with population decline after years of civil wars. It was established in 18 BCE as part of the reforms contained in the Lex Iulia de Maritandis Ordinibus and Lex Papia Poppaea laws.