Conditions there were favorable to emigration
<span>On 14 May 1607, the London Company established the Jamestown Settlement about 40 miles inland along the James River, a major tributary of the Chesapeake Bay in present-day Virginia. The future of the settlement at Jamestown was precarious for its first 5 years.</span>
Answer:
because persia was a larger empire and was probably better but Athens and Sparta and some other Greek city-states helped and they had the advantage because they knew the geography of the land and the element of surprise.