Between 1996 and 1999, Aetna initiated a series of company acquisitions.

During his first term (1993-97), he initiated a series of landmark social, economic and constitutional reforms.

His find quickly initiated a series of archaeological investigations and excavations.

Mahathir initiated a series of major infrastructure projects in the 1990s.

However, the 12th century initiated a series of unions that would prove permanent.

In 1957, Ethiopia initiated a series of five-year development plans.

Then he initiated a new series of dangerous games.

Nor was it the way to initiate a four-game series against an inferior team.

That could initiate a whole series of changes along the time-line, I imagine.

Japan then initiated a series of policies "Sakoku" to close the country.