# Licensing

Copyright (c) 2026 幕末人物・勢力ナビ contributors

## Software code

Unless otherwise noted, the software code and technical implementation in this
repository are licensed under the MIT License below. This includes JavaScript,
CSS, HTML structure and behavior, schemas, tests, build scripts, and
configuration files.

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

## Original editorial content and data compilation

Original editorial text, descriptions, labels, and copyrightable contributions
to the selection and arrangement of the historical data are licensed under the
[Creative Commons Attribution 4.0 International License](https://creativecommons.org/licenses/by/4.0/).

When sharing or adapting that material, credit "幕末人物・勢力ナビ
contributors", provide a link to the material and the license where reasonably
practicable, and indicate whether changes were made.

The CC BY 4.0 license applies only to rights that the contributors are
authorized to license. No copyright is claimed over historical facts
themselves.

## Third-party material

Content on linked source websites and other third-party material is not covered
by this repository's licenses. Consult each source for its own terms.

The geographic shapes derived from Natural Earth use its public-domain map
data. Natural Earth does not require attribution; its terms are available at
https://www.naturalearthdata.com/about/terms-of-use/.

Names, logos, and trademarks remain the property of their respective owners.