
until 1333, became the true ruling position from this
point on, since the emperor followed the regent’s
directives. It was Hojo regents who oversaw the sig-
nificant events of the Kamakura period, including
the Jokyu Disturbance and the Mongol invasions.
The Hojo family came to power as a result of
their victories over their rivals following the power
struggle that occurred after Yoritomo’s death. Fur-
ther, as noted above, Yoritomo was married to
Masako, a Hojo woman. Masako’s father, Hojo
Tokimasa, became regent to the shogun in 1203.
There were challenges to Hojo power. In 1221,
the retired emperor Go-Toba (1180–1239), sup-
ported by other court aristocrats, made an unsuc-
cessful attempt to overthrow the Hojo in an incident
known as the Jokyu Disturbance (Jokyu no hen).
Yoritomo’s death in 1199 and the assassination of the
third shogun, Minamoto Sanetomo, in 1219, desta-
bilized shogunal authority and created a window of
opportunity for imperial family members and court
nobles to attempt to seize back actual ruling power.
Go-Toba issued a decree in 1221 calling for the
overthrow of the Hojo regent Yoshitoki. To quell
this attempt, Hojo forces led by Yasutoki—Yoshi-
toki’s son—occupied Kyoto and suppressed imperial
resistance. The current emperor, Chukyo, was
deposed, and retired emperors Go-Toba and Jun-
toku were exiled. In Chukyo’s place, the shogunate
installed Go-Horikawa as emperor (r. 1221–32). As a
result of this disturbance, the shogunate established
a presence in Kyoto to supervise court activities—
especially any activity that might lead to another
plot against the shogunate—and to administrate
lands in western Japan. This new institution, the
Rokuhara tandai, acted as special administrators to
the shogun. Moreover, lands owned by the defeated
aristocrats were confiscated and loyal vassals were
appointed jito for these estates as a reward for serv-
ing the shogunate. These activities assured an
enhanced political status for the shogun who was
now recognized as ruler of most of the country.
Other political changes were instituted by the
Hojo. In 1225, Yasutoki created a Council of State
(Hyojoshu) that consisted of his main retainers and
advisers. In 1232, the Council of State promulgated
the Joei Code (Joei shikimoku), a 51-article legal code
that articulated Hojo judicial and legislative prac-
tices and the conduct of the military government in
administering the country. In 1249, a judicial court
(hikitsuke) was established to further refine the legal
process.
Mongol Invasions During the Kamakura period,
in addition to the constant domestic intrigues
involving Kyoto aristocrats and rival warrior families
vying for power, Japan sustained a significant threat
from beyond its shores. The Mongols, who had
taken control of China, made two attempts to invade
and conquer Japan. Kublai Khan (1215–94), grand-
son of Genghis Khan, founded the Yuan dynasty in
1271 and became the first Mongol emperor of
China. Making the northern city Dadu (modern
Beijing) his capital, he turned his attention to Japan,
demanding in a letter sent to the “King of Japan” in
1268 that the Japanese pay tribute to the Yuan
dynasty. This and subsequent missives were ignored
by the Japanese government. As a result, Kublai
Khan made his first attempt to invade Japan in 1274.
He dispatched an army reportedly numbering
40,000 warriors to Kyushu. Soon after a successful
landing, much of the Mongol army and its fleet of
ships were destroyed by a typhoon. Those troops
that survived retreated back to southern Korea,
where the invasion had originated.
Undeterred, in 1275 Kublai Khan renewed his
demands that the Japanese pay tribute to his empire.
Despite reiterating his message on several occasions,
his demands were again ignored. This time, the
shogunate anticipated a second invasion. They forti-
fied coastal defenses and built a wall around Hakata
Bay in Kyushu at considerable cost to the Kyushu
vassals. In 1281, the second invasion occurred. This
time, two large armies were dispatched. After a brief
occupation, a typhoon once again destroyed much of
the invading army and navy. And once again, the
Mongols were forced to retreat to the continent.
The typhoons that destroyed the Mongols on these
two occasions came to be known as “divine winds”
(kamikaze). The Japanese believed that the Shinto
gods (kami) had furnished divine protection for the
archipelago.
Victory over the Mongols was attained at the cost
of economic hardship and political ramifications.
Despite the confirmation of divine favor, Japanese
coastal defenses remained on guard for many years
thereafter but no subsequent invasions occurred. In
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