About 250 B.C. Diodotus (Theodotus), governor of Bactria under the Seleucidae, declared his independence, and commenced the history of the Greco-Bactrian dynasties, which succumbed to Parthian and nomadic movements about 126 B.C. After this came a Buddhist era which has left its traces in the gigantic sculptures at Bamian and the rock-cut topes of Haibak.
On the opening, early in 1896, of the Constantinople-Salonica railway, which has a station here, a large proportion of the extensive transit trade which Enos, situated at the mouth of the Maritza, had acquired, was immediately diverted to Dedeagatch, and an era of unprecedented prosperity began; but when the railway connecting Burgas on the Black Sea with the interior was opened, in 1898, Dedeagatch lost all it had won from Enos.
The Armenians also make use of the mundane era of Constantinople, and sometimes conjoin both methods of computation in the same documents.
Certain it is that mixed castes are found referred to at a comparatively early period; and at the time of Buddha - some five or six centuries before the Christian era - the social organization would seem to have presented an appearance not so very unlike that of modern times.
The foundation of Lampeter College was one of the earliest signs of a new era of revived vigour and better government within the Church, although it was not till 1870 that, by Mr Gladstone's appointment of Dr Joshua Hughes to the see of St Asaph, the special claims of the Welsh Church were officially recognized, and the old Elizabethan policy was one more reverted to after a lapse of nearly two hundred years.
A few years afterwards, a Fleming named Rubruquis was sent on a similar mission, and had the merit of being the first traveller of this era who gave a correct account of the Caspian Sea.
In an era when cameras were cumbersome and the number of channels on TV could be counted on one hand with enough fingers left over to snap, very little video of any kind was seen.
The Armenians marked their complete disruption with the Greeks by starting an era of their own at the synod of Dvin.
The era of peace thus inaugurated brought with it a rapid progress in all branches of civilization; and there soon emerged not only a national art and a condition of material prosperity shared by the entire land in common, but also a state religion, which gathered up the ancient tribal cults and floating cosmical conceptions, and combining them as best it could, imposed them on the people as a whole.
The tertiary era opens with a climate in which during the Eocene period something like existing tropical conditions must have obtained in the northern hemisphere.