Why did Christian States in Southeastern Europe declined so badly

they didn't decline at all, they just fragmented into small domains ruled by small time leaders, so it was difficult to mount a real army to fight the turks for example

also, the people most notably in southern balkans, thrace for example, were more or less willing to open the gates to the new conqueror be it byz, bulgarian or in the end turk, instead of fighting, due to being tired of too many wars and being conquered and reconquered again and again was nothing new

in bulgaria there was 3 tzars ruling 3 different portions of the tzardom - vidin, tarnovo and karvuna, not to mention wallachia which had who knows how many voevods and banats

this was going on everywhere

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>>1931447
They're absorbed into the Glorious Ottoman Empire

Their men are subdued, humiliated, and slaughtered, their children are adopted to become slave soldier for the empire, and their women are used as sex slave harem whores until their death

>>1931831
This.
You had 3 wouldbe Bulgarian emperors, Byzantium with 2 wouldbe emperors, Serbia with two wouldbe emperors and 3 kings wanting to control one of the emperors from the shadow. Also, one of the two wouldbe Serbian emperors wanted to be the Byzantine emperor and was more concerned with building monasteries on rocks at Meteora than military ventures.
Also, there's the Ottoman Sultan.

A grand total of 8 wannabe emperors and a bunch of vassals competing for power

>>1932498
>>1931831

True, but such political fragmentation is not coincidental. There must have been some underlying causes for the rapid decline of central authority.

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>>1931992
>turkey touches something
>it turns into shit
hey at least your royal family is white :-)

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>>1934335

>>1934299
OH SHIT

IT WAS HER EMPEROR IVAN ALEXANDER"S SECOND WIFE WAS A JEW

SHE MADE HIM DIVORCE HIS WALLACHIAN WIFE TO MARRY HER INSTEAD

SHE MADE HIM MAKE HER SON BE "EMPEROR" TOO EVEN THOUGH HE WAS YOUNGER SO WE GOT 2 "EMPERORS"

>As Bulgaria and the Serbian princes in Macedonia prepared for united action against the Turks, Ivan Alexander died on February 17, 1371.[36] He was succeeded by his sons Ivan Sracimir in Vidin[23] and Ivan Šišman in Tǎrnovo,[23] while the rulers of Dobruja and Wallachia achieved further independence.

FFFUUUUUUCCCCC

>>1931992
Christian history books sound like fun.

>>1934299
central authority ended when the latin byzantine empire fell to the greeks and started the greek byzantine dinasty in 600 . the slavs took control of the balkan region and in the time those regions held like 3 / 4th of all the legions . the other parts of the empire dident accept the greeks as the rightful ruler . so it went to shit from there . now look at the map from 600 - 1300 ...

>>1935389
Never go full retard

>>1931992

if this were so serbia would not be as it is today

The Balkans come in two varieties:

1. part of a larger multi-ethnic empire that rules over them, during which there is relative peace and stability in the region

2. a fractured, disparate group of ethno-states in a near permanent state of contention if not warfare

>>1935973
No. The times when there were only Byzantium, Bulgaria and Serbia (and parts of Hungary if you want to add it) things were pretty peaceful in comparison to medieval times.
The
>fractured, disparate group of ethno-states in a near permanent state of contention
Is a recent phenomenon. A very recent phenomenon, that erupted because of forced attempts at unity in which not one political side could be satisfied.

The medieval fracturing was a feudal thing. Just look at the Heptarchy, and HRE, look at Poland-Lithuania (the attempt at aristocratic democracy with liberum veto killed it).
Nobles always wanted to use situations in which the status of their ruler was disputed for their own agendas. So when the Kings brother proclaims himself the King instead of the late King's son, you know that it will either end in a civil war, or a relatively bloodless partition of a country.

>>1932498
>>1934299
>>1934600
I hate /pol/ but this time was kinda jewish inside job

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>>1938243
Maybe for Bulgaria, but in the case of Serbia it was merely that the emperor died unexpectedly (theories range from poison, to stroke, to epilepsy), his son wasn't that competent, and the emperor's half brother disputed this succession, but most of the nobility preferred the young inexperienced kid. Only got the 3 lords in Epirus to back him.
Inb4 Jews poisoned him the emperor...

Could it have anything to do with post-recovery from plague in the region and the comparatively centralized kingdoms?

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>>1938362
The plague defiantly had effect on weakening the region, but i'm not sure if it affected the fragmentation.