The modern period starts much later on this account--it was later, in the seventeenth century that the modern period truly began.
It was later, in the seventeenth century, that the modern period truly began. The modern period starts much later on his account.
The modern period starts much later on his account. It was later, in the seventeenth century, that the modern period truly began.
The modern period starts much later on his account. It was later, in the seventeenth century, that the modern period truly began.