1. Fixed a bug in Santa Clara Valley that could increase productivity for improved facilities across the country

1. Civilization has been supplemented with productive forces
2. Expand the number of city names and citizen names to 30

1. Adjusted abilities for Essex, Georgia, and Allen M. Sumner, and changed some abilities to make the UI panel more beautiful
2. Adjustments were made to the Santa Clara Valley and Newport News Shipbuilding

1. Unique improvements were added to New Jersey
2. Integrate the special promotion tree from the Eagle Union-Golden Age Fit into this mod

1. Added a special icon for F2H Banshee
2. Refactored the file structure
3. Adjusted the capabilities of Georgia and New Jersey

A new leader was added: Allen M. Sumner

Completed the agenda of the remaining leaders and Helena's diplomatic text, as well as the English text as complete as possible;
Adjusted Essex' Leader Abilitiy;
Added historical timemaps for some units using in-game assets.