Which country is called the land of a thousand elephants?

Which country is called the land of a thousand elephants?A. Netherlands
B. England
C. Laos
D. South Africa

The Lao kingdom of Lan Xang or Lan Ch’ang was established in 1354 by Somdetch Brhat-Anya Fa Ladhuraniya Sri Sadhana Kanayudha Maharaja Brhat Rajadharana Sri Chudhana Negara (otherwise known as Fa Ngum) (pronounced Fah Ngoom). It is also known as the “Land of A Million Elephants”.
Laos is a Southeast Asian country traversed by the Mekong River and known for mountainous terrain, French colonial architecture, hill tribe settlements and Buddhist monasteries. Vientiane, the capital, is the site of the That Luang monument, where a reliquary reportedly houses the Buddha’s breastbone, plus the Patuxai war memorial and Talat Sao (Morning Market), a complex jammed with food, clothes and craft stalls.
Capital: Vientiane