The area began to first be developed during the 1830s and 1840s.

Research into the nature of pain developed during these years.

Or does he develop into something else during the play?

He developed a close and very personal relationship with his father during this time as well.

His strong interest in nature and valley life were developed during these years.

Opposition to the project developed during the 1960s and early 1970s.

The first land depression since 1987 also developed during the season.

But, he continued, "this thing developed over the course of many years and during more than one administration."

The only answer is to develop new products during this period.

It developed during the early decades of the 20th century.