I know this has been done before but I hope mine isn't to repetitive, I am sorry about the form but I am not a good story teller, anyways I got from the destruction of Rome to the beginning of the common era in my timeline so far (I know it has a couple stretches, the Numidians quickly dispatching Carthage, Seleucids invading the Ptolemaic Kingdoms, a centralization of celtic power, a powerful germanic invasion of interior france, etc...):
527 BCE- Umbrians settle the Tiber River, annex Tibur from the Latins.
511 BCE- Latins attack Tibur, fail to take it.
500 BCE- Same as OTL incept for a minor disturbance between Latins and Umbrians.
498 BCE- Umbrians move West and expand, take Gabii.
482 BCE- Rome takes Gabii.
481 BCE- Gabii is a battlefield, total war on both sides.
480 BCE- Umbrians move on Rome, take it in the battle of Plebia.
470 BCE- Latium is conquered by Umbrians, Latins in tatters.
465 BCE- Veii take Latium, begin building near remains of Rome, city called Veiit.
426 BCE- Etruscans attack Umbri, Etruscans control entire Tiber River and the River Nar.
400 BCE- Status: Total War between Umbrians and Etruscans, Latins gone, Latium a battlefield.
384 BCE- Umbrians extinguished by Etruscans, Etruscans united over the total war.
382 BCE- Piceni and Samnites attack Etruscan threat, a greek colony set up in Modern-Day “Le Marche”, Greek State is called Elyria.
359 BCE- Samnites become allies with greek state against Etruscans.
335 BCE- Alexander the Great expands his Empire.
333 BCE- Carthage lands on Italian shores.
323 BCE- Alexander the Great dies, empire splits.
320 BCE- Carthage sets up a permanent settlement, begins to trade with remaining Etruscans, Elyrians, and Samnites on the mouth of the Tiber River.
319 BCE- Samnites form a Republic.
315 BCE- Samnites attack Elyria, war begins.
307 BCE- Samnites, Carthaginians, and Etruscans left as only forces remaining.
300 BCE- Status: Samnites becoming more xenophobic, mainland greece divided, etruscans crippled, carthaginians political influence on Samnites weakening.
299 BCE- Samnites expel carthaginians from Italy peacefully.
298 BCE- Old Etruria (All South of Arretium) completely annexed, Picentis butchered.
297 BCE- An Alliance of Southern Italian Powers form against Samnites, known as Messa league.
283 BCE- Gauls move South, conquer New Etruria (All Etruscans north of Arretium).
270 BCE- Po River Gauls declare war on Samnites.
257 BCE- Samnite Republic deteriorates, Messa League peacefully is absorbed into Brutii and Tarentum.
248 BCE- Po Gauls move South settle at Tiber river.
239 BCE- Massalia conquered by Gauls.
232 BCE- New Carthage expands North. Carthaginian Settlement formed in Ardea area.
224 BCE- Mauretanians attacked by Carthage.
216 BCE- Mauretanians become disassembled and migrate West.
208 BCE- Numidians form a conglomerate, hired warriors rebel, Carthage on it's knees.
200 BCE- Status: Northern Italy is controlled by Po Gauls, Southern Italy is controlled by Greek States, Samnites divided, Carthage has a massive internal problem caused by a massive external problem, Increased Numidian Nationalism, Spanish Carthage expanding.
199 BCE- All Carthaginian colonies become part of the United Numidian Empire (not including independent Spanish Carthage).
198 BCE- Mauretanians take advantage of the confusion and storm through Spanish Carthage, ransacking Gades and successfully controlling the Atlantic coast of Southern Spain.
182 BCE- Ptolemaic Kingdoms attacked by Seleucid Empire, retreats.
179 BCE- Seleucid Empire conquers Alexandria, ransacks the city.
176 BCE- Ptolemaic Kingdoms fall, Seleucid Empire controls Egypt.
161 BCE- Macedon conquers Aetolia and Epirus.
160 BCE- Athens and Sparta unite against macedon.
159 BCE- The battle of Thebes cripples both armies. Ends in stalemate, later the treaty of Delphi leaves uneasy peace.
150 BCE- Dacians expand south, pick off armies of Macedon.
145 BCE- Armenia expands South-West.
136 BCE- Eastern Seleucid Empire fragments, Parthia expands, Estherian Empire forms at mouths of Tigris and Euphrates, Elam forms on opposite side of Tigris.
134 BCE- Jewish uprising in Israel, quickly demolished.
133 BCE- Estherian Empire attacks Elam, forces them away from the Tigris, builds the Wall of Jorem.
122 BCE- Jorem, the emperor and religious leader, declares a “crusade” up the Tigris and Euphrates to find the entrance to the garden of eden.
117 BCE- The treaty of Delphi is broken, hostilities increase, Thebes conquered by Macedon, Athens besieged.
116 BCE- Athens falls, Epirus revolts, Sparta ransacks Thebes, marches on Athens.
110 BCE- Crete joins Sparta, attacks Athens from sea, remaining Athenians revolt, Athens is part of Sparta, Epirus declares independence.
104 BCE- Aetolia conquered by Sparta, Crete lands on shores near Pella.
100 BCE- Status: Estherian Empire crusading up the Tigris and Euphrates, West Parthia falling, Po Gauls control northern Italy, Numidian Empire is the largest naval and trading force in the Western Mediterranean, Seleucid Empire ruling with an iron grip, Sparta controls Aetolia and Athens and invading Macedon, Crete marching on Pella, Epirus independent, Armenia expanding, Elam diminished.
99 BCE- Estherian Empire conquers western Parthia.
84 BCE- Numidia marches on Italy, takes Liguria, Latium, Sicily, and parts of Modern-Day Tuscany region.
70 BCE- Pella taken, Macedon crumbling in the hands of Sparta and Crete
66 BCE- Crete pulls back troops, assaults Sparta's mainland, Aetolian and Athenian revolts (helped by Crete) stop the Spartan troops from getting back to mainland.
65 BCE- Sparta crushed, Athens, Aetolia, and Epirus re-established, Macedon revolting against Crete.
64 BCE- Athens declares war on mainland Crete.
63 BCE- Seleucid Empire declares war on Crete.
62 BCE- Seleucid Empire makes peace with Crete, declares war on Athens.
61 BCE- Athens destroyed, occupied by the Seleucids.
60 BCE- Seleucid Empire declares war on Crete.
59 BCE- Crete occupied by Seleucid Empire.
58 BCE- Crete revolts, Seleucid Empire commits genocides of the revolutionaries.
56 BCE- Macedon declares independence.
50 BCE- Numidia takes over Sicily, and Southern Italy from Greece.
43 BCE- Celtics in some areas of Mainland France and in Southern Britain become an informal chiefdom around a ruling family in the Belgae tribe, become united against the common enemy the Germanics.
40 BCE- Sicambri (Germanic tribe) conquer everything south of Burgundy in France incept for Coastal Areas that are ruthlessly protected to prevent naval attacks on Britain.
35 BCE- A group of warriors in tribes in Southern Britain and Northern France attack the modern-day Netherlands.
34 BCE- The campaign succeeds, they now have full naval control of the British Isles.
33 BCE- Celtic Society becomes more united and centralized around Belgaes.
30 BCE- A Celtic campaign goes North ridding the area of the Caledoni.
22 BCE- Celts not associated with the chiefdom are killed off by the more powerful Germanic forces.
20 BCE- Last remaining independent Celtic tribe is killed off by Numidians in Northern Italy.
11 BCE- Other Germanic Tribes attack Sicambri for a piece of France.
5 BCE- Seleucids colonize Eastern Italy.
01 CE- Status: Celts remain in British Isles, Coastal France, and Netherlands as a unified chiefdom moving closer to statehood, Germanics fighting over interior France, Numidians control all of Italy, Spanish Carthage and Mauretanians are having a total war over Spain and rapidly colonize all of non-celtic Spain, Armenians and Estherians in conflict in Mesopotamia, Seleucid Empire controlling Southern Greece and Crete, Eastern Parthia is fading into irrelevance, the two great naval powers (Seleucid Empire and Numidian Empire) are getting close to land disputes over southern Italy.