Esperanto is popular because it is easy to learn. Some students of the language can become quite familiar with it through home study over a matter of a few weeks or months. According to supporters, Esperanto even helps students learn other languages easier. There are characteristic word endings for nouns, adjectives, and verbs. There is only one definite article, la and no indefinite article.
Adjectives end in -a and take plural and objective endings to agree with nouns.
From the base of 15,000 to 20,000 root words - once can combine roots and suffixes to form over 150,000 words in Esperanto. The Esperanto movement is becoming quite active in Asia, especially in Japan and China. Some Asian universities offer courses in Esperanto. An undergraduate degree in Esperanto has actually been available at a Hungarian university since 1967. The highest concentrations of Esperanto speakers can be found today in Brazil, Japan, Iran, Madagascar, Bulgaria, and Cuba.