Tenshō refers to a specific era in Japanese history that lasted from 1573 to 1592. It is part of the Azuchi-Momoyama period, which was marked by significant political and social changes as Japan moved towards unification under powerful leaders like Oda Nobunaga and Toyotomi Hideyoshi. The era is known for its cultural developments, including advancements in art, architecture, and the tea ceremony. During the Tenshō period, Japan experienced increased contact with foreign nations, particularly through trade and missionary activities. This led to the introduction of new ideas and technologies, as well as the spread of Christianity by missionaries such as Francis Xavier. The era set the stage for the subsequent Edo period, which would bring about a long period of peace and stability.