While Nitta was winning this signal victory, others were in arms for the mikado elsewhere, and everywhere the Hojo power went down. The people in all sections of the empire rose against the agents of the tyrants and put them to death, many thousands of the Hojo clan being slain and their power utterly destroyed. They had ruled Japan from the death of Yoritomo, in 1199, to 1333. They have since been execrated in Japan, the feeling of the people being displayed in their naming one of the destructive insects of the island the Hojo bug. Yet among the Hojo were many able rulers, and under them the empire was kept in peace and order for over a century, while art and literature flourished and many of the noblest monuments of Japanese architecture arose. Go-Daigo was now recalled from exile and replaced on the imperial throne. For the first time for centuries the mikado had come to his own and held the power of the empire in his hands. With judgment and discretion he might have restored the old government of Japan. But he lacked those important qualities, and quickly lost the power he had won. After a passing gleam of its old splendor the mikadoate sank into eclipse again. Go-Daigo was ruined by listening to a flatterer, whom he raised to the highest power, while he rewarded those who had rescued him with unimportant domains. A fierce war followed, in which Ashikaga, the flatterer, was the victor, defeating and destroying his foes. Go-Daigo had pronounced him a rebel. In return he was himself deposed, and a new emperor, whom the usurper could control, was raised to the vacant throne. For three years only had the mikado remained supreme. Then for a long period the Ashikagas held the reins of power, and a tyranny like that of the Hojo existed in the land. _THE TARTAR INVASION OF JAPAN._ In all its history only one serious effort has been made to conquer the empire of Japan. It ended in such dire disaster to the invaders that no nation has ever repeated it. During the thirteenth century Asia was thrown into turmoil by the dreadful outbreak of the Mongol Tartars under the great conqueror Genghis Khan. Nearly all Asia was overrun, Russia was subdued, China was conquered, and envoys were sent to Japan demanding tribute and homage to the great khan. Six times the demand was made, and six times refused. Then an army of ten thousand men was sent to Japan, but was soon driven from the country in defeat. Kublai Khan, the Mongol emperor of China, now sent nine envoys to the shogun, bidding them to stay until they received an answer to his demand. They stayed much longer than he intended, for the Hojo, who were then in power, cut off their heads. Once again the Chinese emperor sent to demand tribute, and once again the heads of the envoys were severed from their bodies.