well one of the most largest country by size is kazakhstan with the popluation being about 47 % Muslim... now saudia Arabia is smaller but its population is at 90% with all citzens cliaming 100% Muslim so is matter of land size or population size that practice Islam..
I think it's Indonesia
Indonesia
The largest population country is Indonesia.
The largest county in Nevada by size is Nye County. It covers over 18,000 square miles and includes landmarks like Death Valley National Park and part of the Nevada Test Site.
United of Arab Emirates
Indonesia
Kazakhstan
Russia is the largest country in the world by land area, covering approximately 17.1 million square kilometers.
Canada is the second largest country in the world by land area, after Russia.
Russia is the largest country in the world in terms of geographic size, covering over 17 million square kilometers.
Indonesia has the largest Muslim population, with about 200 million Muslims.
The largest Islamic country by population is Indonesia. The most important country in the Islamic religion, however, is most likely Saudi Arabia, as this is the area where Islam was founded.
russia