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Purpose: This paper is an investigative study of the process from the introduction of flintlock guns by Polpogal trading ships in 1543, to Francisco Xavier's arrival in Japan six years later, to the edict expelling Jesuit missionaries in 1587. Research design, data, and methodology: This was the period when Nobunaga of Japan appeared and ruled the country, and Nobunaga committed suicide due to the Honno-ji incident and Hideyoshi Toyotomo became his successor. Then came the Azuchi-Momoyama period, when Hideyoshi unified Japan and there was serious conflict between trade with Portugal and Christian missionary work. Results: During the early modern Japanese Christian century (1549-1650), Christianity experienced an initial missionary period, a period of growth and development, and finally the appearance of martyrs. Nobunaga embraced Christianity to get rid of Buddhism, and Hideyoshi distributed an edict expelling Jesuit missionary Christianity to protect trade. During the Kirishitan century (1549-1650) in early modern Japan, Christianity went through a period of growth, a period of secrecy, and ultimately the emergence of martyrs. Nobunaga accepts Christianity to eliminate Buddhism, and Hideyoshi to promulgate an edict expelling Jesuit missionarie Christianity to protect trade. Implications: Starting with Sumitada Omura in 1563, Yoshitaka Kuroda in 1577, Sorin Otomo in 1578, Harunobu Arima in 1580, Yukinaga Konishi in 1584, and others were baptized and a group of so-called Christian daimyo emerged. They burn down Japan's shrines and Buddhism, dedicate Nagasaki as an ecclesiastical ordinance, and Hideyoshi expresses his disquiet and promulgates an expulsion order for the Jesuit missionaries.
Kang et al. (Thu,) studied this question.