100 BCE The Roman Empire with the changes effected by Second Punic War:

211 BCE - Conquest of Syracuse, complete control of Sicily
206 BCE - Conquest of Carthaginian Spain
197 BCE - Creation of Hispania Citerior (Nearer Spain)
197 BCE - Creation of Hispania Ulterior (Further Spain)
148 BCE - Conquest of Macedonia
146 BCE - Conquest of Greece, incorporated into Macedonia
146 BCE - Conquest of Carthage, creation of province of Africa
133 BCE - Inheritance of the kingdom of Pergamum (Province of Asia)
129 BCE - Conquest of Illyricum (possibly incorporated into Macedonia at first)
123 BCE - Conquest of Balearic Islands, incorporated into Hispania Citerior
121 BCE - Conquest of Gallia Transalpina (Narbonensis)
102 BCE - Conquest of Cilicia