The First Flowering
With the discovery of magic by the creator races, talented individuals began experimenting with planar travel, contacting and visiting other worlds. Through these early portals came natives of these other worlds—dwarves, treants, elves, and mind flayers, in that order. Other races appeared, either through crossbreeding, planar immigration, or transformation by magic. Sharns and phaerimms are believed to have appeared during this time, and may have been birthed by the primal energies of the Weave.
Halflings, gnomes, and giants arose on Toril. Goblinoids migrated to Toril in small waves when they discovered portals. Non-humanoid creatures such as beholders, wemics, and centaurs established territories, while pegasi and winged creatures such as aarakocras filled the skies while the dragons slept.
Of these arrivals, elves and dwarves proved the most resourceful. Each race began to acquire cultural, technological, and commercial power, establishing strong kingdoms across the face of Faerun and other continents. This event, known as the First Flowering, heralds the ascension to civilization by races that still exist in great numbers today.