Da weiß man schon gleich, dass man nur annektiert wurde.
A nice aspect about the German reunification that everyone should know: Graduations and degrees that don't get acknowledged, birth certificates that don't get acknowledged - only because there's a stamp depicturing hammer, dividers and garland of corn* on it. (*Note: It seems like there's no proper translation for "Hammer, Zirkel und Ährenkranz", so I took it word by word. As such it means the symbol in the flag of the GDR that distinguished the black, yellow and red German flag of that German state from the flag of West Germany, which can be found in the same colors, but blank in that middle space or with the black federal eagle instead.)
As if the people could have chosen which one of both states they were born in.
Such aspects let you know right away that haven't been reunified, but you have been annexed.