- Roman civilization transitioned from a republic to an empire under Julius Caesar and later Augustus Caesar. The empire expanded across Western Europe and Caesar directed the construction of a bridge to invade Germania.
- Roman law formed the basis of legal systems across Europe. Law was based on customary law (ius) that was written down in legal codes (lex) such as the Twelve Tables of Law displayed in Rome.
- Roman philosophy was influenced by Greek schools of thought like Stoicism. Stoics emphasized living virtuously and accepting life's hardships. Later Roman philosophers like Seneca, Epictetus, and Marcus Aurelius further developed Stoic ideas.