After the Industrial Revolution, the power of the Western countries had expanded… 2. Awareness of the necessity of fortifying sea defense
After the Industrial Revolution, the power of the Western countries had expanded… After the Industrial Revolution, the power of the Western countries had expanded… 
Egawa Tarozaemon Hidetatsu (1801-55) who was ”Daikan” (the local governer) of Nirayama… 
Egawa Tarozaemonhidetatsu ordered by the Shogunate again to plan the Edo Bay… 
The Meiji New Government worked on "the Tokyo Bay Defense Program" to…