<p>Indonesia is a country in South East Asia with an estimated population of 281 million. &nbsp;It has the world&rsquo;s fourth-largest population.&nbsp; 87.2% (245 million) of the country&rsquo;s population is Muslim &ndash; the largest in the world.<span>&nbsp; Indonesia is a presidential representative democratic republic in which the president is the head of both state and government.&nbsp; It has a civil-law system, based on the Roman-Dutch model and influenced by customary law.&nbsp; In addition, Sharia law is practised in Aceh, a province located at the northern tip of Sumatra Island.</span></p>