The cause of abolishment about the ambassadors to tang

The reasons of the removal for the abolition of the Tang Dynasty have always been a big debate.at present the Tang Dynasty is generally believed that removal system was abolished mainly because of the Tang Dynasty's national weak strength and the Japanese government which was facing financial difficulties,this article from the Tang Dynasty system was abolished so that the real causes of start considering the Tang Dynasty when the system was spent in various factors,trying to give a more objective and more comprehensive answers.