Chronology by the timekeeping of Sharin 

Age 0 

Limited nuclear war reduced the world to an earlier technology; the history of this time has been lost. 

Age 1 

Pockets of a technology exist, controlling steam power, medicine, advanced farming and metallurgy (steel), but as these pockets scavenge for resources in the non-contaminated wastes, they destroy each other in prolonged conventional warfare with explosives. 

Age 2 

Isolated pockets of people in a savage state relearn farming and hunting-gathering. Growth of these families into extended clans, much reclamation of wastelands. Retention of some age 1 technology by refugees in a Sharin mountain valley, and by refugees in two Osa mountain valleys. Written records are maintained in strongholds kept secure; safe-guarded by a general tradition of literacy among these three groups. 

Age 3 

Growth of clans on the Upai plains into a unified country entering a city-state stage and then a loose confederacy ruled by god-kings of clan Teot. Clans in the Sharin valley establish the Brotherhood for exploration, for weapons training of the young, and teaching of age 1 knowledge to scholars. Later discoveries in medicine psychology and warfare are added to the store of knowledge. Both Upai and Sharin countries establish law codes, money, and secure roads. First alliances together at this time. The Sek fisherfolk of Tan remain age 2 in level. 

Age 4

Expansion of Upai rulers into large scale leveed [Levied?]-labor farming, supplying agricultural excess for development of greater class diversity. Expansion across greater plains areas and uprise[Rise?] of Upai empire. Trade routes opened jointly with Sharin, exploration of new territories to south across Salado Mountains. First sea trade with southern island fisherfolk and savages still at hunting-gathering stage. These fisherfolk and plains nomads accepted as an underclass of farmers with Upai as protective warriors. 

Age 5 

Arrival of pale colored sea farers from across the ocean, in Tan. To the north Upai empire crumbling with internal wars; support for outlying colonies withdrawn. As the sea-farers expand, the Upai withdraw. Sharin accepts many refugees of high learning and harbors them from purges and army coups in the Upai empire. Clan Teot is held hostage for a time, once places a retarded child on the god-king's throne due to assassination of all heirs of age. Clan Teot spends exile for many years in Sharin. Development of the two Osa mountain valley peoples into one, absorption of Upai methods; Osa government defies Upai rulers and grows increasingly militant. 

Age 6 

Tan and Plains and Marsh countries are totally occupied by descendants of sea-farers. Expansion of Tannese north to Po desert, contact with Sharin. Sharin is kept busy with internal intrigues and with fending off problems with remnants of Upai empire. Osa government takes remaining Upai strong points, kills most of the Clan Teot, shatters the last of the Upai empire. Clans flee into the Salado mountains where most are killed by snow or massacre Sharin defeats Osa expansion at the passes of the Sharin mountains by superior weaponry and troop training. In the Po desert, Sharin allies with Upai survivors, and defeat a weak Osa force at Redspring. Tan, Marsh, Plains (sea-farer descendants) combine under Tanman Kasin to defeat a large Osa force at Pass of Bones, on border of Tan and the Po desert many cairns east of Redspring. Afterward Tan suffers internal rebellions and pirate attacks along coasts. The Fortress of Tan is attacked and almost lost to coastal Crag rebels. Tan defeats them and annexes Crag mountains as part of itself, formerly a retreat of dissidents and outlaws. Sharin secures itself against further Osa attacks. Medical knowledge improves with new surgical method, new herbs and holistic methods from Upai refugees. Refugees (Including Upai from north) enter Tan and Plains and Marsh countries when Sharin refuses entry to the flood. They take cupflower for medical purposes into Tan where it becomes a popular vice. Outlaws from the wars band together into the brotherhood of Nandos, growing powerful enough over many years to harry the few remaining Sharin caravans and to raid Tan's 1# desert holds. They build the stronghold called Central. Contracting Nandos becomes acceptable army practice in Marsh and later in Tan. 

Age 7 

After defeats in south and east, Osa forces withdraw to secure Upai lands. Bad weather in the southern passes and lack of resources to maintain the wartime armies overstrains the Osa government for a long period. Bad harvests and disorganized low class Upai laborers, refugees now, create starvation for a long period. After resumption of Upai farming methods, population builds to excess. Due to Nandos, independent bandits, and internal politics, Sharin abandons trade routes and becomes isolationist. Expansion of Tan across the Po desert is held down by slow development of oasis technology and by bandits. Nandos split into two camps, one led by Manoloki loyal to own leader and group, the other led by Reti and professing allegiance to the rulers of countries of residence, and to contracted obligation. Osa experience the rise of a military dictator and good harvests along with better mountain road technology permitting Osa passage of Salados even in bad weather. Osa commanders demonstrate advanced warfare (Napalm tanks) to possible allies and succeed with Central Nandos, Marsh men rebellious against Tan's influence, and Crag men in search of independence as before Tan's annexation. This alliance permits Osa expansion that. failed in age 6. Tan and Plains lose Po desert border Holds. Waves of refugees move southward toward the Fortress. Cragmen set up an independent alliance with Marsh and island-based pirates for smuggling of cupflower, weapons, and other contraband. Sharin holds its passes with greater difficulty, due not to increased Osa technology, (which still remains primitive compared to Sharin), but due to increased foot troop numbers among the Osa. Several Tannese landholders contract Nandos from Central to serve in of place of home troops, at Pass of Bones and the Nandos betray the field at Pass of Bones resulting in loss of the Pass to a rebel front calling itself the Upai, actually the combined forces of the Osa allies. Tan gains knowledge of Osa alliance and superior weaponry, and holds back the Osa for some time, but internal betrayal yields the Fortress of Tan to the Osa. Decimation of subject populations occurs, until Crag allies turn on the Osa and gain control of both weaponry and the Fortress of Tan. Tanman forced into exile far east on the coast with few men, his army scattered as refugees. Plains embroiled in both internal battles and Osa raids and loss of territory to Central Nandos. Populace of Marsh rises against its nobles and in most places are put down by Cragman assistance, using Osa weaponry.