USA HISTORY

Detailed explanation-1: -Border: The Mexican Republic has borders with: United States, Guatemala and Belize over a total of 4.301 kilometers distributed as follows: With the United States of America, a boundary line extends over 3, 152 km from the 258 Monument northwest of Tijuana to the mouth of the Rio Grande into the Gulf of Mexico.

Detailed explanation-2: -The first surge began in the 1900s. Revolution in Mexico and a strong U.S. economy brought a tremendous increase in Mexican immigration rates. Between 1910 and 1930, the number of Mexican immigrants counted by the U.S. census tripled from 200, 000 to 600, 000. The actual number was probably far greater.

Detailed explanation-3: -Mexicans account for the biggest group of immigrants living in America, but the number of immigrants coming into the U.S has started to decline. They primarily come from nine states: Zacatecas, Guanajuato, Michoacán, Oaxaca, Guerrero, San Luis Potosí, Hidalgo, Chiapas and Jalisco.

Detailed explanation-4: -1849: The Treaty of Guadalupe Hidalgo established the Mexican-United States Boundary Commission to survey and mark the boundaries between the countries. They established the line from the Pacific Ocean to the junction of the Gila and Colorado Rivers in present day New Mexico and Arizona.