Final answer:
Rome's conquest of lands was facilitated by dividing and conquering, negotiating from strength, establishing colonies, building roads, and transforming former enemies into allies. Additionally, Roman expansion contributed to the economy and introduced infrastructure.
Step-by-step explanation:
Rome was able to conquer so much land due to several factors: dividing and conquering by defeating one enemy at a time and turning enemies against each other, negotiating from a position of strength, establishing colonies in conquered lands for defense, constructing well-connected roads, transforming former enemies into allies, and expanding military might through offering citizenship to conquered cities.
Additionally, Roman expansion contributed to the economy by controlling natural resources, attaining wealth from conquered regions, and utilizing enslaved people for labor.
Roman infrastructure, such as roads, aqueducts, and port facilities, connected the empire and encouraged skilled artisans to flourish in their specialized fields.