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Insular area

Insular area is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Insular area rather than just read about it. In short: In the law of the United States, an insular area is a U.S.-associated jurisdiction that is not part of a U.S. state or the District of Columbia (Washington, D.C.). This includes fourteen U.S. territories administered under U.S. sovereignty, as well as three sovereign states each with a Compact of Free Association with the United States.

Insular area — main illustration
Insular area — illustration

Key takeaways

  • Insular area belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Insular area to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Insular area from memory before moving on to harder problems.

Reference excerpt

In the law of the United States, an insular area is a U.S.-associated jurisdiction that is not part of a U.S. state or the District of Columbia (Washington, D.C.). This includes fourteen U.S. territories administered under U.S. sovereignty, as well as three sovereign states each with a Compact of Free Association with the United States. The term also may be used to refer to the previous status of the Swan Islands, Hawaii, and the Philippines, as well as the Trust Territory of the Pacific Islands when it existed. Three of the U.S. territories are in the Caribbean Sea, eleven are in the Pacific Ocean, and all three freely associated states are also in the Pacific. Two additional Caribbean territories are disputed and administered by Colombia. Article IV, Section 3, Clause 2 of the U.S. Constitution grants to the United States Congress the responsibility of overseeing the territories. A series of U.S. Supreme Court decisions known as the Insular Cases created a distinction between "incorporated territories", where the full Constitution of the United States applies, and "unincorporated territories", where only basic protections apply. The only current incorporated territory, Palmyra Atoll, is uninhabited. A U.S. territory is considered "organized" when the U.S. Congress passes an organic act for it. Three of the U.S. territories with a permanent non-military population have constitutions, and all five have locally elected territorial legislatures and executives, and some degree of political autonomy. Four of the five are "organized", but American Samoa is technically "unorganized" and subject to the direct jurisdiction of the Office of Insular Affairs.

History The first insular areas that the United States occupied were Baker Island, Howland Island, and Navassa Island (1857). Then Johnston Atoll and Jarvis Island (both in 1858) would be claimed. After the Spanish–American War in 1898, several territories were taken that are still under U.S. sovereignty (Puerto Rico and Guam, both in 1898). Palmyra Atoll was annexed along with the Republic of Hawaii (formerly a Kingdom) that same year. American Samoa was reclaimed the following year (1899). In 1917, at the height of World War I, Denmark sold the Danish Virgin Islands to the United States. The U.S. Navy annexed Kingman Reef in 1922. Spain had sold the Northern Mariana Islands to Germany in 1899. The islands passed to Japan, which in turn lost them to the United States in 1945 after the end of World War II. The Marshall Islands became self-governing in 1979 and fully independent along with the Federated States of Micronesia in 1986. Palau achieved independence in 1994. The three countries maintain sovereignty with free association status with the United States, which provides them with defense assistance and economic resources.

… excerpt ends here. Continue reading the full article.

Illustrations

Insular area: Locations of the insular areas of the United States, color-coded to indicate status
.mw-parser-output .legend{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .legend-color{display:inline-block;min-width:1.25em;height:1.25em;line-height:1.25;margin:1px 0;text-align:center;border:1px solid black;background-color:transparent;color:black}.mw-parser-output .legend-text{}  The 50 states and the District of Columbia
  Incorporated unorganized territory
  Unincorporated organized territory
  Unincorporated organized territory with Commonwealth status
  Unincorporated unorganized territory
  Compact of Free Association
Locations of the insular areas of the United States, color-coded to indicate status .mw-parser-output .legend{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .legend-color{display:inline-block;min-width:1.25em;height:1.25em;line-height:1.25;margin:1px 0;text-align:center;border:1px solid black;background-color:transparent;color:black}.mw-parser-output .legend-text{}  The 50 states and the District of Columbia   Incorporated unorganized territory   Unincorporated organized territory   Unincorporated organized territory with Commonwealth status   Unincorporated unorganized territory   Compact of Free Association
Insular area: Beach in American Samoa
Beach in American Samoa
Insular area: Capitol of Puerto Rico, the largest insular area
Capitol of Puerto Rico, the largest insular area
Insular area: Wake Island lagoon
Wake Island lagoon

Worked examples

Example 1 — a first encounter with Insular area

Start with the simplest possible case. Write down what Insular area claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Insular area before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Insular area ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Insular area

In research
Insular area appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Insular area in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Insular area is common in secondary-school and first-year university syllabi. It links to neighbouring topics Dependent territories, Insular areas of the United States, Types of administrative division, so understanding it makes those chapters shorter.
In everyday life
Look for Insular area outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Insular area in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Insular area means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Insular area out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Insular area in simple terms?

In the law of the United States, an insular area is a U.S.-associated jurisdiction that is not part of a U.S. state or the District of Columbia (Washington, D.C.). This includes fourteen U.S. territories administered under U.S. sovereignty, as well as three sovereign states each with a Compact of F…

Why does Insular area matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Insular area?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Insular area.

Tags

  • Dependent territories
  • Insular areas of the United States
  • Types of administrative division

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