Answer:
As a militaristic empire, Rome was rarely short on wars and always had a need for soldiers. This was also a good way for the lower classes to secure a steady income and even earn land once their 25-year service was over. As the empire grew, so did the variety of jobs.
Rome is also a short voyage by boat from Spain and only a few days' journey to France on horseback. Its central location made Rome a desirable trading post even before the city's rise to power. This centrality later helped the Romans administer their empire effectively by reducing communication times.
The location of Rome was significant because it gave the Romans access to trade routes. Also, Rome is central in the Italian peninsula, which made expansion easier, according to Rome was established along the Tiber River.
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