Accounts of the dramatic event were sent via ship across the Pacific to San Francisco and then sped by Pony Express across the American West.
July 29, 1959 (Ansei 5): Tairo Ii Naosuke signs Japanese-American Treaty of Amity and Commerce (also known as the "Harris Treaty"), which was a follow-up to the 1854 Treaty of Kanagawa.
1862 (Bunkyū 2): The Bunkyū Reforms relax restrictions on daimyo which had been imposed by former Tairo Ii Naosuke in the Ansei era.
However, Saigō’s activity in Edo came to an abrupt end with the Ansei Purge by Tairo Ii Naosuke against anti-Shogunal activities, and the sudden death of Shimazu Nariakira.