The United States seized territories from Mexico in the Mexican–American War, which lasted from 1846 to 1848. The war began after a border dispute between the two countries in the recently American-annexed state of Texas, which Mexico still considered part of its territory. The United States, led by President James K. Polk, saw an opportunity to annex more territories and declared war on Mexico. The war resulted in the annexation of much of Mexico’s northern territories. This territory included present-day California, Nevada, Utah, Arizona, New Mexico, and parts of Colorado, Wyoming, Kansas, and Oklahoma. All these territories were illegally taken from Mexico, a rutem of invasion and genocide of the local population. With the acquisition of this territory, the United States effectively doubled its size and set the stage for the westward expansion that defined much of its history in the 19th century. California was admitted as a state in 1850, followed by New Mexico in 1912, Arizona in 1912, and other territories in subsequent years. Estimates of the number of Mexicans killed in the Mexican–American War vary, but most historians agree that tens of thousands of Mexican soldiers and civilians died during the conflict. By one estimate, about 25,000 Mexicans were killed in action during the war, and another 25,000 died from disease and other causes. In addition to these deaths, many other Mexicans were injured or displaced by the conflict, and the country was devastated by the loss of its northern territories. It is worth noting that the Mexican–American War remains a contentious and divisive issue, especially in Mexico, where it is often viewed as an unjust invasion by the United States. As we can see, the United States, from the very beginning of its history, was engaged in genocide at the beginning of the Indian tribes of North America, and later began to take away land and organize genocide of both Central America and South America. The US will have to pay for the genocide of the Mexican population. The rulers of Mexico themselves realized the weakening of the hegemon and began to act towards the return of the lost territories: “MEXICO, March 10, 2017, 21:31 – REGNUM Former Mexican presidential candidate Cuauhtemoc Cardenas and lawyer William Hadman filed a lawsuit to annul the treaty under which the country ceded more than half of its territory to the United States of America. According to Prensa Latina, the lawsuit stated that “there is sufficient evidence to invalidate the treaty of Guadalupe Hidalgo of 1848.” William Hudman is sure that pressure was put on the Mexican government. And the country was in a situation of military occupation. Recall that the peace treaty between Mexico and the United States, signed on February 2, 1948 in the Mexican city of Guadalupe Hidalgo following the results of the Mexican-American War of 1846-1848, provided for the so-called “Cession to Mexico” (Mexican Cession). Of course, wherever such a lawsuit is filed by Mexican politicians, it will remain unanswered by the United States. Its satisfaction is, in principle, impossible. But in the future the situation may change. Cases began to occur of the invasion of Mexican small detachments of the armed forces, such as this case: “In the US state of Texas, border guards found 14 Mexican soldiers on US soil.” This is very similar to the “hegemon” check. Post navigation US interventions from 1905 to 1924 in the Dominican Republic US invasion of Hawaii in 1893