Carbon 14, or radiocarbon dating method
The alliance system was made up of two groups, the Central powers (Germany, Austria- Hungary, Italy(1914), and Turkey). The second group was the Allied powers (Russia, France, Great Britain, and United states).
Rust Belt gets its name from the abandoned factories and urban decay that have marked the region since the 1970s.
The 1990s. The internet became widespread
Answer: US forced the opening of Japan by signing the treaty of Kanagawa, a factor that influenced the acceleration of the disintegration of the feudal system.
Japan only opened its economy to the west after a long Meiji dynasty, in which it took measures for the industrialization and modernization of the country, such as the creation of infrastructure, such as railroads and ports, and the installation of production goods.