Definite, Indefinite +Zero Articles

Before consonant sounds e.g. (ˌjuː) (yew) e.g. Uniform

Companies e.g. Facebook, Twitter, IKEA, Google

Mountains & lakes e.g. Everest, Lake Constance

Used with a silent "H" e.g. hour, honest

Religions e.g. Islam, Christianity

Rivers/plural mountain ranges /seas/oceans/island groups e.g. Rhine, Rocky Mountains, British Isles

Noun + Number e.g. Room 221, Platform 2

With Numbers 100, 1,000, 1,000,000

Countries in plural e.g. Netherlands, United States

General ideas/abstract nouns e.g. love, hate, happiness, evil, danger

to talk about musical instruments e.g. I play.......piano, guitar

Used for Acroynms e.g. NATO, NASA, LASER, SCUBA

Before vowel sounds e.g. (ʌ) Umbrella

What type of article is used with countries? E.g. Canada, England

When the name of a country includes multiple areas or it has "republic" in the name?

Used for initialism e.g. BBC, FBI, CIA

National groups e.g. British, Swiss, Spanish