I think it would be ( They mainly stayed out of sight, but were in complete control of all matters big and small.) hope this helps.
However, determining the precise beginning and ending to any "period" is often arbitrary, since it has changed over time over the course of history.
The Whigs included traditional enemies who united in their opposition to President Andrew Jackson and his policies. Southern slaveholders, who opposed Jackson's support of the Tariff of 1828, supported the Whig Party