Add the problem collection “Japanese history you want to remember” (323 questions) to the app “Let's write and learn anything”. (Please install separately from the list of AQSOFT.JP's apps.
You will need Ver 2.0.0 or later of "Let's write and remember".
It covers the range from the Stone Age to the end of World War II. In addition, you can add, edit and delete problems in "Let's write and remember". If you do not need notification of upgrading in the future, you can uninstall this app after adding the problem collection.