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Molcajete used to grind spices Molcajete as a food container. Molcajetes are used to crush and grind spices, and to prepare salsas and guacamole.The rough surface of the basalt stone creates a superb grinding surface that maintains itself over time as tiny bubbles in the basalt are ground down, replenishing the textured surface.
Tridilosa: invented by civil engineer Heberto Castillo. Anti-graffiti coating (Deletum 3000): developed in the early 2000s at UNAM’s Applied Physics and Advanced Technology Centre in Querétaro Mexico. Earthquake Resistant Foundations: invented by engineer Manuel González Flores in 1945.
The timeline of wars has been split up in the following periods: List of wars: before 1000; List of wars: 1000–1499; List of wars: 1500–1799; List of wars: 1800–1899; List of wars: 1900–1944; List of wars: 1945–1989; List of wars: 1990–2002; List of wars: 2003–present
This is a list of military conflicts, that United States has been involved in. There are currently 123 military conflicts on this list, 5 of which are ongoing. [citation needed] These include major conflicts like the American Revolutionary War, the War of 1812, the Mexican–American War, the American Civil War, the Spanish-American War, World War I, World War II and the Gulf War.
The use of metates is estimated to have begun in the Upper Cenolithic period in Mexico, sometime between c. 5000 BC – c. 3000 BC, [6] and in the Middle Archaic period in the American Southwest, c. 3500 BC. [5]
500 BC – The moldboard iron plough is invented in China; 500 BC – Row cultivation of crops using intensive hoeing to weed and conserve moisture practised in China; 300 BC – Efficient trace harness for plowing invented in China; 200 BC – Efficient collar harness for plowing invented in China; 100 BC – Rotary winnowing fan invented in China
The following articles cover the timeline of United States inventions: Timeline of United States inventions (before 1890), before the turn of the century; Timeline of United States inventions (1890–1945), before World War II; Timeline of United States inventions (1946–1991), during the Cold War
The Pastry War (Spanish: Guerra de los pasteles; French: Guerre des Pâtisseries), also known as the first French intervention in Mexico or the first Franco-Mexican war (1838–1839), began in November 1838 with the naval blockade of some Mexican ports and the capture of the fortress of San Juan de Ulúa in the port of Veracruz by French forces sent by King Louis Philippe I.