“reason of doing something”

Question

I’ve recently stumbled upon a “key word transformation” sentence which sounded like this:

The poor harvest led to many families leaving the island.

It had to be transformed using the word “reason”. I rewrote it as follows:

The poor harvest was the reason of many families leaving the island.

Is that wrong? I can’t find any information about it on the internet.

Answer 1

Yes, it's wrong.

We don't talk about **the reason of ** something.

Your options are:

The poor harvest was the reason for many families leaving the island.

or, which I prefer:

The poor harvest was the reason that many families left the island.