Guyana is the only South American country whose official language is English, a legacy of its history as a British colony (British Guiana). Its neighbors primarily speak Spanish, Portuguese, or Dutch.

The United States does not have an official language at the federal level, though English is the de facto national language used in government and business. Many states, however, have adopted English as their official language.

The Philippines recognizes both Filipino and English as official languages. Filipino is the national language, standardized from Tagalog, while English is used in government, education, and business.

Standard Arabic is the official language of Algeria, alongside Tamazight (Berber). French is still widely used in administration and business due to colonial history but is not an official language at the national level. Tamazight is also an official language in Algeria.

While French is widely used in business, both Algeria and Morocco recognize both Modern Standard Arabic and the indigenous Berber language (Tamazight) as official languages.

While Mandarin has the most native speakers, English holds the title for the largest number of total speakers (including second-language users), due to its status as the primary global language of business, science, and the internet.

Urdu is the national language and English is the co-official language of Pakistan, used for official business and higher education.

Haiti's official languages are French, used in administration and education, and Haitian Creole, the language spoken by virtually the entire population.

Urdu is the national language of Pakistan and a lingua franca, although English is used for official business.

El Salvador adopted the US Dollar as its official currency in 2001, replacing the Salvadoran Colón. This move aimed to stabilize the economy and facilitate trade.