Final answer:
The two factors that helped Rome build a great empire were military dominance and political stability. Rome achieved military dominance through successful military strategies and the strength of its citizen-soldiers.
Step-by-step explanation:
The two factors that helped Rome to build a great empire were military dominance and political stability.
Rome achieved military dominance through the strength of its citizen-soldiers and successful military strategies. The Roman army was inspired by greed and the cultural importance placed on winning military glory.
They used tactics such as dividing and conquering, negotiating from a position of strength, and establishing colonies in conquered lands.
Political stability in Rome was achieved through the strong political institutions of the Republic. The Roman Senate developed successful policies for conducting wars and maintaining control over conquered territories.
The aristocrats acquired political power through military glory, and even after the establishment of the Empire, military success was highly valued for political importance.