Impact of Languages

As we know, all languages on in the world are affecting and being affected to/by affect each other. This phenomenon is made because of due to religious religion, immigration, adjacency location, war, autocracy politics, scientific exchanges etc. It seems some languages became forgotten by have died due to this phenomenon and while some the others have become stronger.

In the light of the above paragraph, sometimes, it is impossible to learn a language fluently without caring about its main neighbor(s) language(s). For instance:
Latin and French for English
Latin for French
Persian for Indian
Arabic for Persian
Latin for Spanish
Chinese for Korean
Tibetan for Chinese

Strong languages usually digest and deform imported words and sometimes restructuration is happened necessary. Studies about this trend and this process is really sweet for researchers, and when learners become aware about that of it, they can often easily remember the words by heart very often.

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 corrections

suggestions

in the world  Just my opinion, but I think this phrase is redundant here.  :)

Nicely written. And as you know, it is an interesting topic for me.  :) Some people would disagree with your term:  main neighbor(s) language(s). For example, Korean is believed to be related to the Ural-Altaic language family and is not linguistically related to Chinese. Even Hanja is not entirely Chinese. Sometimes the Hanja characters merely represent sounds as Korea did not have it's own writing system until the time of King Sejong.  

But ... that's beside the point.  I agree that learning Hanja will help me with Korean vocabulary.

Learning Arabic roots will increase my Persian vocabulary.

Learning Latin of course could do wonders for my pathetic English vocabulary.  :) (Not kidding!)

Impact of Languages

As we know, all languages (in) 

the word are affecting and being affected to/by each other. (to and by)

This phenomenon is made because of religious (views)

immigration, adjacency, war, autocracy, scientific exchanges etc. It seems some languages became forgotten by this phenomenon and some the other became stronger. (are becoming forgotten) (and some others are becoming stronger).

In the (delete the) light of the above paragraph, sometimes, it is impossible to learn a language fluently without caring (without considering) about (delete about) its main neighbor(s) language(s). For instance:  

Latin and French for English
Latin for French
Persian for Indian
Arabic for Persian
Latin for Spanish
Chinese for Korean
Tibetan for Chinese
Strong languages usually digest and deform importing words and sometimes restructuration is happened. (strong languages evolve over time)

Study about this trend and (see that) this process is really sweet (very valuable) for researchers and when learners become aware about that, (really very valuable for researchers and learners alike  as they can easily remember the words by heart very often.(delete very often)