To the east no boundary was visible before the Indus.

To the north the empire extended to the Caspian and the Euxine seas, with that steep Caucasian range, never passed even by the most daring of the early Asiatic conquerors.
Eastward of the Caspian, the rivers of Oxus and Iaxartes divided the subjects of the great king from the ravages of the Tartar; the Arabian peninsula interposed its burning sands, a barrier to the south--while the western territories of the empire, including Syria, Phoenicia, the fertile satrapies of Asia Minor, were washed by the Mediterranean seas.

Suddenly turning from this immense empire, let us next endeavour to discover those dominions from which the Athenian ambassadors were deputed: far down in a remote corner of the earth we perceive at last the scarce visible nook of Attica, with its capital of Athens--a domain that in its extremest length measured sixty geographical miles! We may now judge of the condescending wonder with which the brother of Darius listened to the ambassadors of a people, by whose glory alone his name is transmitted to posterity.

Yet was there nothing unnatural or unduly arrogant in his reply.

"Send Darius," said the satrap, affably, "earth and water (the accustomed symbols of homage), and he will accept your alliance." The ambassadors deliberated, and, impressed by the might of Persia, and the sense of their own unfriended condition, they accepted the proposals.
If, fresh from our survey of the immeasurable disparity of power between the two states, we cannot but allow the answer of the satrap was such as might be expected, it is not without a thrill of sympathy and admiration we learn, that no sooner had the ambassadors returned to Athens, than they received from the handful of its citizens a severe reprimand for their submission.