Help tranlate into japanese?

I need to translate something into coherent Japanese, just not sure how to do it. Here is what I want to say:

Personally, I think in all countries、cultural events allow people to be able to remember significant historical facts.

I have some vocab:
個人的 personally
万国に (in) all countries
国民　National people　
慣行 customs
できる be able to
大切なの史実をおぼえる remember important historical facts.

Can anyone help me construct the full sentence?

自分で万国に国民は文化できことで大切な史実をおぼえると思う。

this is close but I'm not 100% what you wanted to say

自分で isn't really even really needed, but i threw it in there anyway lol. 個人的 doesn't work well there.