Final answer:
Leadership and laws played a crucial role in the foundation and expansion of the Roman Empire, with a strong government system and military advancing Roman rule and culture.
Step-by-step explanation:
The foundation and expansion of the Roman Empire were crucially influenced by leadership and laws. Leaders such as the consul and senators governed the Republic, and later emperors like Augustus solidified the empire's power through effective rule and established legal frameworks. The expansion of Roman culture was further enabled by the Roman army, which not only defended and expanded Roman territories but also spread Roman values and practices.
Moreover, Rome's complex system of government and representation, which included various assemblies and consuls with significant authority, underpinned the empire's ability to function and conquer new lands. This included the Centuriate Assembly for creating laws and consuls with imperium to enforce them. The Roman economy was also essential, reliant on trade, taxes, and the labor of enslaved individuals and skilled artisans, which all contributed to the empire's expansion.