Help needed, please!

Hello,

could you natives please rewrite the sentences in bold in a more simplified way?

Thank you in advance!

Nevertheless, Lugiones were unaccustomed to obligation or discipline, and altogether disinclined and opposed to bring about a common will. To this end their rulers, as well as the common man, nurtured violence to produce a huge collection of savage humanity seemingly unable to be united by a single cause for any span of time. This inhibition was only magnified by the few roads and the enormity of their domain, together with the length, breath, and depth of their forests, swamps, and waterways. Yet it was in this manner and by these means that with great success the Lugiones resisted the aggressive and persistent advances of the Celts, Sauromatae, and later the Romans. Offered as friend or foe, each in turn proved a direr challenge to the continued independence of their tribes, and thereby the personal freedom of all. Once well versed in communal songs their story remains largely shrouded in shadow, and all but dimly lit by the written-word of more literate nations. Still, with the fullness of time, great patience, and the proper leadership, chance, and a sudden reversal of fortune, it may be possible to unite the lugii peoples, and turn the tides of fate on those that once beheld these tribes with nothing but contempt.