What did he do and why did a crisis ensue?

But the schools had opened at such a hectic pace and raised so many new issues that by 1553 a systemic crisis ensued.

Political crisis ensued; over the next several decades, the defence of the Empire gradually collapsed.

There was a disagreement that might be described as harsh, a crisis ensued, and by sitting together they found a way to reason it out.

A discreet academic crisis ensued, and when the dust of battle settled, lo!

A fierce crisis ensued in which the Protestant preachers were expelled.

When they actually managed to get one and present it to him, a real crisis ensued.

And a further crisis ensued when he finished the book.

Unemployment and a long economic crisis ensue as economies contract.

After the food crisis of 1316/1317, an economic crisis ensued.