In Yellow color the Kingdom borders
In Violet color the sea border
In Red color the borders with the foreign States
In Blu and White color the internal border between Lombardy & Venetia
In Green color the capital cities Milan and Venice

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if you want to open a secondary window with a magnified map (+30%)

(Original map taken from "Dagli Stati Preunitari al Regno D'Italia", vol. 1, ed. Sassone 1999)