Is there any agreement on what makes a state "state"?
- Is it de facto tax collection (especially, customs)?
- Is it the number of general-residents ("permanent-residents") in a given place?
Is there any agreement on what makes a state "state"?
From Wikipedia 'State (polity)':
A state is a polity under a system of governance with a monopoly on force. There is no undisputed definition of a state.
From Etymonline:
state (n.2)
"political organization of a country, supreme civil power, government," c. 1300, from special use of state (n.1); this sense grew out of the meaning "condition of a country" with regard to government, prosperity, etc. (late 13c.), from Latin phrases such as status rei publicæ "condition (or existence) of the republic."
The sense of "a semi-independent political entity under a federal authority, one of the bodies politic which together make up a federal republic" is from 1774. The British North American colonies occasionally were called states as far back as 1630s; the States has been short for "the United States of America" since 1777; also of the Netherlands. State rights in U.S. political sense is attested from 1798; form states rights is first recorded 1858. Church and state have been contrasted from 1580s. State-socialism attested from 1850.
Many forms are tax collection are surprisingly modern. There used to be tithes for the church inc support for the poor, and customs charges and estate revenues to run government. Income tax in the modern sense only dates from 1799.
Language is use. I recommend following changes in use of the words organ, and shuttle, to highlight the fluidity of language use in practice. Concepts don't have an essence, but are defined by how we use them.
In political science, a state is territory — a geographical area — that is claimed, administered, and controlled by an established government.
A state, by that definition, is in contrast to a nation, which is a community of people with social, cultural, or ethnic cohesion. In times of peace states generally have well-defined borders, either defined by 'natural' geographic boundaries or by treaty with other states. But during periods of conflict a territory may be contested: claimed by various different states, or by non-state actors working within a given state or states. In some cases a government will collapse completely, leaving an administrative vacuum in which various small groups contest for power, none of which can establish control or administer the normal functions of government (e.g. Somalia). These 'failed states' persist as long as surrounding states continue to honor the borders established with the original (now failed) state, on the expectation that a new government will eventually form within that territory.
There is a long and difficult tension between the concepts 'nation' and 'state'. In some cases powerful, established states, through conquest or colonization, lump together various small nations and ethnic groups to create an overarching, 'artificial' state, with predictable internal conflicts (e.g. India). In other cases, clearly defined nations are split up among various different states, creating 'stateless' peoples (e.g., the Kurdish people). In still other cases a drive towards nationalism — the effort to subdue a diverse state under the control of a culturally, ethnically, and/or religiously homogenous national group — produces suppression, oppression, and other problematic outcomes. But none of this confusion affects the basic distinction that 'state' refers to delineated territory and 'nation' to groups of people.