rength
of a few vestiges of their language, to regard them as Mongols.
Investigations concerning the various tribes, however, show that among
the Juan-juan there were both Mongol and Turkish tribes, and that the
question cannot be decided in favour of either group. Some of the tribes
belonging to the Juan-juan had formerly lived in China. Others had lived
farther north or west and came into the history of the Far East now for
the first time.
This Juan-juan people threatened the Toba in the rear, from the north.
It made raids into the Toba empire for the same reasons for which the
Huns in the past had raided agrarian China; for agriculture had made
considerable progress in the Toba empire. Consequently, before the Toba
could attempt to expand southward, the Juan-juan peril must be removed.
This was done in the end, after a long series of hard and not always
successful struggles. That was why the Toba had played no part in the
fighting against South China, and had been unable to take immediate
advantage of that fighting.
After 429 the Juan-juan peril no longer existed, and in the years that
followed the whole of the small states of the west were destroyed, one
after another, by the Toba--the "Hsia kingdom" in 431, bringing down
with it the "Western Ch'in", and the "Northern Liang" in 439. The
non-Chinese elements of the population of those countries were moved
northwards and served the Toba as soldiers; the Chinese also, especially
the remains of the Kansu "Western Liang" state (conquered in 420), were
enslaved, and some of them transferred to the north. Here again,
however, the influence of the Chinese gentry made itself felt after a
short time. As we know, the Chinese of "Western Liang" in Kansu had
originally migrated there from eastern China. Their eastern relatives
who had come under Toba rule through the conquest of eastern China and
who through their family connections with Chinese officials of the Toba
empire had found safety, brought their influence to bear on behalf of
the Chinese of Kansu, so that several families regained office and
social standing.
[Illustration: Map 4: The Toba empire _(about A.D. 500)_]
Their expansion into Kansu gave the Toba control of the commerce with
Turkestan, and there are many mentions of tribute missions to the Toba
court in the years that followed, some even from India. The Toba also
spread in the east. And finally there was fighting with South China
(430-431), which brou
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