become effective
enter into force
come into force
enter into force
bring something into force

But he had become more effective and comfortable with his role in the past year.

It is very likely these weapons would have become effective if the first world war had lasted into 1919.

And of late, also, they seemed to have become less effective.

Yet at the same time, drug treatment programs have become more effective.

After all, a parent could not make a child become responsible and effective.

The law on the state enterprise (association) will have become effective.

The procedure has become more open and effective as a result.

"We want to help their military become more effective," an official here said.

The treaty became effective the same day and was published one week later.

However Henderson, despite his long years of experience, had now become less effective.