Estates General was the common estate of three estates - First estate (clergy), Second estate (nobility) and Third estate ( commoners). Before the Estates General the three estates were rigidly divided and their interests were antagonistic to each other. The absolute monarchy and economic crises brought them under one common platform i.e Estates General. Here they began to shun the separate estates and fought for a common cause. Estates General paved the way for national assembly and ultimately united France under one national identity.
One of the major long term effects of the recognition of Christianity in Constantinople was that Christians were no longer persecuted, which led to Christianity becoming a major religion in Europe.
I believe that the correct answer is D.)Animal Species
Animals reproduce , breed , and affect the agriculture.
Look up the word agriculture , you will see how my answer makes more sense.
My reason being is mainly because everything basically lives off of animals and if the are affected by anything and in any way start to decrease , the population will also.
I really hope that this helps you out a lot.
The Treaty of Versailles meant peace at the times, as it ended the WWI. However, it also established very harsh conditions for Germany (high war reparations), which later led to Germany's poverty and the rize of Nazis to power : so it's blamed for instigating (causing, leading to) the WWII.
The Treaty of Versailles also brought a big land loss for Germany, Austria and Hungary.