country in the world with 21.4 million international arrivals per year. [29] [30] [31] Since 2006 the country has been in the midst of a drug war which has claimed 60,000 lives. [32] Contents 1 Etymology 2 History 2.1 Ancient cultures 2.1.1 Archaic period 2.1.2 Classic periods 2.1.3 Post-classic period 2.2 Conquest