In a(n) the oldest males (grandfathers, fathers, and uncles) control cultural, political, and economic resources and, consequently, have power over females.

Patriarchal family system.

Explanation:

The patriarchal system is the one which the eldest male member of the society, family, or government rules and governs, and holds political and economic power. In the patriarchy system, the male is the head over females and they hold the place of superiority in the family or society. The eldest male member of the family either grandfather, father, or uncle rules.

The word 'patriarchy' is derived from Greek which means 'government of the father.'

So, the correct term in the above-stated statement is the 'patriarchal family system.'