The actuarial present value of benefits allocated to all periods before a valuation year is called actuarial liability.
Actuarial liability is the actuarial present value of any benefits allocated prior to the valuation year.
Caesar drew Gaul's northeastern frontier at the Rhine, taking in present-day Belgium, and warned that the Ger?­man?­ic tribes across the river ' the Franks (after whom France is named), Alamans, and Saxons ' would always threaten the security of the frontier.