invasione

Invasione is the Italian word for invasion, defined as the act of entering a territory or domain by force or in overwhelming numbers, typically to conquer, occupy, or assert control. The term can also denote broader incursions or spread across borders, including non-military contexts such as ecological or social phenomena.

In a military sense, an invasion is a large-scale operation in which armed forces cross a boundary to defeat defender forces or seize control. It is distinguished from an attack or bombardment by its scale, objectives, and often its pursuit of occupation. International law generally prohibits the use of force to acquire territory, and invasions are evaluated under jus ad bellum and jus in bello.

Historical examples of military invasions include the invasion of Poland in 1939, which marked the start of World War II, and the Allied invasion of Normandy in 1944, a turning point in Western Europe.

In biology, an invasive species is a non-native organism that spreads in an environment and causes ecological or economic damage, outcompeting local species. Notable examples include the zebra mussel in North American waters, the cane toad in Australia, and kudzu in parts of the United States.

In law and everyday language, invasion can refer to breaches of privacy, such as unreasonable intrusion into personal life or data collection without consent, which is regulated by privacy and data-protection laws.

The term can also be used metaphorically to describe rapid, overwhelming spread of ideas, cultures, or technologies into new markets or regions.