This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.

As a result, by 1206 Temujin had managed to unite or subdue the Merkits, Naimans, Mongols, Keraites, Tatars, Uyghurs, and other disparate smaller tribes under his rule. It was a monumental feat for the "Mongols" (as they became known collectively). At a Khuruldai, a council of Mongol chiefs, Temujin was acknowledged as "Khan" of the consolidated tribes and took the new title "Genghis Khan". The title Khagan was not conferred on Genghis until after his death, when his son and successor, Ogedei, took the title for himself and extended it posthumously to his father (as he was also to be posthumously declared the founder of the Yuan dynasty). This unification of all confederations by Genghis Khan established peace between previously warring tribes and a single political and military force under Genghis Khan.
By what year had Temujin created a significant "Mongol" tribal alliance?