The United Mexican States (Spanish: Los Estados Unidos Mexicanos), referred to as Mexico, is a federal country in North America. It borders the United States to the north, the Pacific Ocean to the south and west, the Caribbean Sea, Belize and Guatemala to the southeast, and the Gulf of Mexico to the east. With an area of 1964375 square kilometers, it is the fifth largest country in America and the fourteenth largest country in the world.

Mexico is one of the centers of ancient Indian culture in the American continent. The famous Olmec culture, Toltec culture, Teotihuacan culture, Zapotek culture, Maya culture and Aztec culture were bred here, which developed the Aztec Empire, the largest country in North America before Columbus.

Climatic characteristics

The climate in Mexico is complex and diverse. Because it has many plateaus and mountains, its vertical climate characteristics are obvious. The climate in Mexico is complex and diverse. The plateau is mild all year round, with an average temperature of 10 ~ 26℃. Northwest China has a continental climate; The coastal and southeastern plains have a tropical climate. Most of them are divided into drought (10 ~ April) and rain (May ~ September), and the rainy season concentrates 75% of the annual precipitation. The driest month every year is February, and the precipitation is only 5 mm, while the wettest month is July, and the precipitation is about 170 mm?

The climate in 70% places is dry. The average annual precipitation in the northwest of China is less than 250 mm, while that in the mainland is 750- 1000 mm, and that in the central part of the Gulf Coast and the southern part of the Pacific Coast is 1000-2000 mm. In the land area, humid and hot areas account for 4.8%, dry and hot areas for 23%, temperate areas for 23. 1%, arid areas for 28.3% and extremely arid areas for 20.8%. Because of its plateau topography, Mexico enjoys the reputation of "Pearl of the Plateau", with no severe cold in winter, no intense heat in summer and evergreen seasons.