Looking on the internet deeply has found these results:

In the world is the most popular phrase on the web.

In this world 1149,000,000 results on the web	In the world 12,980,000,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
In this world bad things happen. In this world, majesty, a true and loyal friend is the greatest boon any man can have. In this world, people own things far more valuable. In this world, the one and only destiny. In this world, I hate bread the most! In this world, there are a lot of things worse than that. In this world, the excursion was cancelled and rescheduled for tomorrow. In this world, there are a lot of people who don't have anyone to eat with.	In the world of fact, probably not. I was tussling with the most dangerous animal In the world... a woman. In the world of global finance, financial innovation plays an increasingly important part. In the world of debs and tea parties maybe. In the world, there are over 4000 languages. In the world, there is no eternal thing. Kids are the only people In the world That you're allowed to hit. Jack's mom said to me That there's only a few different types of men In the world.

In this world

1149,000,000 results on the web

In the world

12,980,000,000 results on the web

More popular!

In this world bad things happen.
In this world, majesty, a true and loyal friend is the greatest boon any man can have.
In this world, people own things far more valuable.
In this world, the one and only destiny.
In this world, I hate bread the most!
In this world, there are a lot of things worse than that.
In this world, the excursion was cancelled and rescheduled for tomorrow.
In this world, there are a lot of people who don't have anyone to eat with.

In the world of fact, probably not.
I was tussling with the most dangerous animal In the world... a woman.
In the world of global finance, financial innovation plays an increasingly important part.
In the world of debs and tea parties maybe.
In the world, there are over 4000 languages.
In the world, there is no eternal thing.
Kids are the only people In the world That you're allowed to hit.
Jack's mom said to me That there's only a few different types of men In the world.