Let's look at the first paragraph:

　南韩、北韩人使用中国汉字有1000多年的历史，绝对是中华文化的后裔，可是为什么后来废除了中国汉字呢？首先因为朝鲜的语言属于阿尔泰语系，与中国的汉藏语系不太一样，但是古代朝鲜文化落后，一直没有发明自己的文字，所以只能沿用中国汉字。但是汉字还是无法充分的表现韩语的发音和朝鲜人民的思想感情，普通朝鲜平民根本不识汉字，只有朝鲜贵族、官员会使用汉字，称为"吏读文字"，而普通朝鲜平民只能以口头方式进行文化交流，他们的生活知识和年积月累的农业耕种经验和农耕方法也都无法长久的流传下去。
>>Koreans, either in the north or the south,
AS ZHANGYO POINTED OUT, COULD IT BE IN BOTH THE NORTH AND THE SOUTH

having used Chinese characters for over 1000 years, are absolutely the carriers of Chinese culture,

I FEEL THE "ABSOLUTELY" IS SORT OF CHINGLISH. DO YOU THINK "DEFINITELY" IS MORE FORMAL?

but why did they abolish Chinese characters for a while?
I THINK THIS SHOULD BE: "WHY DID THEY ABANDON CHINESE CHARACTERS LONG TIME AGO?"

The rest of paragraph is too long. I can't edit it in this small box.