Interglossa (Glosa)

Interglossa or Glossa is an International Auxiliary Language devised
by Lancelot Hogben (1895-1975), Ronald Clark and Wendy Ashby to aid
communication between speakers of different languages and so be a supplement
to national languages.

Interglossa is an isolating language, which means that words don’t change
to show their grammatical function. The bulk of Interglossa vocabulary is based
on Latin and Greek words, and there are some influences from Chinese,
Creole languages of Africa, pidgin languages and English.

The Interglossa alphabet

Interglossa alphabet

Notes

sc = [ʃ]
th = [t]

Sample text in Interglossa

Na esthe credo; plu para Nomo habe phanero Verito. Chron u Proto, pan Homini
habe iso. U Theo date a singulo Homini plu no-verso Privilegio, cleisto de Bio,
cleisto de Libero, cleisto de tentato gene hedo.

Translation

We hold these truths to be self-evident, that all men are created equal, that
they are endowed by their Creator with certain unalienable Rights, that among
these are Life, Liberty and the pursuit of Happiness.
(Part of the US Declaration of Independence)

Source: http://www.rickharrison.com/language/interglossa.html

Longer sample text (Tower of Babel)