🚀 go-pugleaf

Can anyone out there give me a brief history of the evolution of the genitive
morphology of German throughout its history of a language, including any
explanative points from Proto-Germanic, etc...

One question seems to be as follows:

If masculine and neuter nouns change their ending in the genitive as -es, as in
die Mutter meines Vaters, and feminine nouns don't have the -es ending, as in
der Vater meiner Mutter, why when making compound nouns with feminine nouns is
there sometimes something like die VergangenheitSbewaeltigung?  Notice the
genitive 's' there, I would conjecture that it follows from a pronunciation
rule, but I know another example that blows that conjecture out of the water,
but it's not in my declarative stores right now. Basically, was there a common
genitive ending sometime in the morphological development of the language or
are these exceptions?  And if so, why exceptions?

Thanks,
Andrew Livingston

Also, can someone give me the 14 tenses of English, and maybe some comparative
information with other languages?  

Also, for you Latin buffs, what are the general differences between Classical
Latin (of Cicero, say) and the Vulgate?

Hope I didn't overload anyone's minds with requests.  Please don't flame me, I
know not what I do.