That depends on which land you're talking about.
In the United States, it's the Constitution.
Memory
is for storing information about the past “memory helps us preserve
past events” and variations on that theme.
Only one state was formed anew in 1956: Kerala. There were however many other changes, where the borders were moved so that the borders follow the linguistic division more closely.
Can you please help me with my question if i help you with yours???