'In conclusion' or 'in conclusion', which word is spelled correctly?

Many of us have read and written Vietnamese incorrectly or struggled to find the correct spelling. In the end - in the end is one of those phrases.

In Vietnamese, this word means to state the main idea, often used to summarize and end a problem or story.

So what do you think is the correct word? Leave your answer in the comment box below.

Kim Nha

Source: https://vtcnews.vn/tuu-trung-hay-tuu-chung-tu-nao-moi-dung-chinh-ta-ar911440.html