History does not happen in isolation. Explore world events across time, follow the connections between them, and investigate the threads that reveal how one event can lead to another.
TheTimeMap currently follows events across 94 countries and 264 years of history — building a connected archive designed for people who want to look beyond the headline.
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Roman Emperor Valerian launched a military campaign against the Sasanian Empire, aiming to assert Roman dominance over Persian territories. This campaign marks a significant conflict between the Roman Empire and Persia during a period of intense rivalry.The...
Odaenathus rose to power in Palmyra amid the crisis of the Roman Empire in the mid-3rd century. Following the capture of the Roman Emperor Valerian by the Persians, Palmyra emerged as a regional power under his leadership.He consolidated control over the ea...
Emperor Gallienus initiated a series of military reforms to address ongoing threats to the Roman Empire. These reforms aimed to improve the mobility and responsiveness of the Roman legions in the face of external invasions and internal revolts.The reorganiz...
Valerian was proclaimed Roman Emperor following the death of his predecessor Aemilianus. His accession marked a significant change in leadership during a period fraught with external threats and internal instability for the empire.Valerian sought to consoli...
Aemilian, a Roman soldier and governor, seized power through a swift military revolt against Emperor Trebonianus Gallus. His accession marked a brief interruption in the Crisis of the Third Century, a period of political instability for Rome.After defeating...
Gallienus became Roman Emperor following the assassination of his father, Valerian. His accession marked the beginning of a co-rule, where he shared power with his father before Valerian was captured during a Persian campaign.His reign occurred during a per...
The Sasanian king Shapur I captured Antioch following his victorious campaigns against the Roman Empire. The fall of this major city marked a significant moment in Roman-Persian conflicts, highlighting the shifting balance of power in the region.Antioch was...
The Cyprian Plague is rapidly spreading across the Mediterranean region, severely impacting cities within the Roman Empire. Reports indicate a high mortality rate and widespread fear among the population.Medical knowledge is limited, and efforts to curb the...
The Battle of Resaena was fought between Roman forces under Emperor Gordian III and the Sasanian Empire. This conflict marked a significant Roman attempt to regain lost territories in Mesopotamia.The decisive engagement near the town of Resaena resulted in ...
The revolt led by Gordian II was part of a larger uprising against the reigning emperor Maximinus Thrax. Gordian II, alongside his father Gordian I, was proclaimed emperor by the Roman Senate in Africa.The rebel forces faced imperial loyalists in a decisive...