帮忙看看有没有语法错误,应如何改正

题目

帮忙看看有没有语法错误,应如何改正
the more people who understand the cultural heritage,the longer time when the culture will be existing.
the local people might have considered the behavior of foreigners as hostile and unfriendly,then they did something to hurt them so that might arouse some of foreigners to attack both the residents and the cultural heritage.
请帮忙看看这两句的语法是否正确,如果有问题应如何改正,

答案

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