Here, let us take a look at the Geography of Peru. note 1: shares control of Lago Titicaca, world's highest navigable lake, with Bolivia; a remote slope of Nevado Mismi, a 5,316-m (17,441-ft) peak, is the ultimate source of the Amazon River

note 2: Peru is one of the countries along the Ring of Fire, which is a belt bordering the Pacific Ocean that contains about 75% of the world's volcanoes and up to 90% of the world's earthquakes

note 3: on 19 February 1600, Mount Huaynaputina in the southern Peruvian Andes erupted in the largest volcanic explosion in South America in historical times; intermittent eruptions lasted until 5 March 1600 and pumped an estimated 16 to 32 million metric tons of particulates into the atmosphere, reducing the amount of sunlight reaching the earth's surface and affecting weather worldwide; over the next two-and-a-half years, millions died around the globe in famines from bitterly cold winters, cool summers, and the loss of crops and animals. Mother's mean age at first birth is N/A , whereas, the Maternal mortality ratio is N/A.