Sentence examples for this was caused from inspiring English sources

This was caused by several factors. . . .

This was caused by a fragment of a meteor.

This was caused by degradation of mevalonate synthesis pathway enzymes.

This was caused by pollution from industry and traffic mixing with ammonia from farming.

"If this was caused by arsonists, as far as I'm concerned they're criminals," he said.

None of this was caused by the attack on the World Trade Center.

Again, Wikipedia believes this was caused by users expecting their searches to auto-complete to Google.

"Because this was caused by such a disaster, everybody's broken-hearted," Ms. Bakke said.

There is no indication at all that this was caused by the half-time show.

It is hard to say if this was caused by the disaster, but it is possible.

Writer speculates that this was caused by an unhappy love affair.