Salt and Christianity provides some juicy tidbits on this most essential of dietary supplements:
"The possession and control of so valuable a commodity has often been an objective in war, and indeed the cause of war. More wars have been fought over salt than over gold. The early salt road via Solaria from Rosettia to Rome was constantly guarded by Roman soldiers who fought off marauders and hostile armies seeking salt. The Germans waged war for saline streams. In our own country, many of the Indian wars were fought over salt licks or salt springs; these were few and widely separated and the Indians protected them at all costs."