with
constitutionally limited authority.

Oligarchy - a government in which control is exercised by a small group
of individuals whose authority generally is based on wealth or power.
Parliamentary democracy - a political system in which the legislature
(parliament) selects the government - a prime minister, premier, or
chancellor along with the cabinet ministers - according to party
strength as expressed in elections; by this system, the government
acquires a dual responsibility: to the people as well as to the
parliament.

Parliamentary government (Cabinet-Parliamentary government) - a
government in which members of an executive branch (the cabinet and its
leader - a prime minister, premier, or chancellor) are nominated to
their positions by a legislature or parliament, and are directly
responsible to it; this type of government can be dissolved at will by
the parliament (legislature) by means of a no confidence vote or the
leader of the cabinet may dissolve the parliament if it can no longer
function.

Parliamentary monarchy - a state headed by a monarch who is not
actively involved in policy formation or implementation (i.e., the
exercise of sovereign powers by a monarch in a ceremonial capacity);
true governmental leadership is carried out by a cabinet and its head -
a prime minister, premier, or chancellor - who are drawn from a
legislature (parliament).

Republic - a representative democracy in which the people's elected
deputies (representatives), not the people themselves, vote on
legislation.

Socialism - a government in which the means of planning, producing, and
distributing goods is controlled by a central government that
theoretically seeks a more just and equitable distribution of property
and labor; in actuality, most socialist governments have ended up being
no more than dictatorships over workers by a ruling elite.

Sultanate - similar to a monarchy, but a government in which the
supreme power is in the hands of a sultan (the head of a Muslim state);
the sultan may be an absolute ruler or a sovereign with
constitutionally limited authority.

Theocracy - a form of government in which a Deity is recognized as the
supreme civil ruler, but the Deity's laws are interpreted by
ecclesiastical authorities (bishops, mullahs, etc.); a government
subject to religious authority.

Totalitarian - a government that seeks to subordinate the individual to
the state by controlling not only all political and