The cinema of the United States, often generally referred to as Hollywood, has had a profound effect on cinema across the world since the early 20th century. Its history is sometimes separated into four main periods: the silent film era, classical Hollywood cinema, New Hollywood, and the contemporary period. While the French Lumière Brothers are generally credited with the birth of modern cinema, it is indisputably American cinema that soon became the most dominant force in an emerging industry. Since the 1920s, the American film industry has grossed more money every year than that of any other country.
In 1878, Eadweard Muybridge demonstrated the power of photography to capture motion. In 1894, the world's first commercial motion picture exhibition was given in New York City, using Thomas Edison's Kinetoscope. The United States was in the forefront of sound film development in the following decades. Since the early 20th century, the U.S. film industry has largely been based in and around Hollywood, Los Angeles, California. Picture City, FL was also a planned site for a movie picture production center in the 1920s, but due to the 1928 Okeechobee hurricane, the idea collapsed and Picture City returned to its original name of Hobe Sound. Director D. W. Griffith was central to the development of film grammar. Orson Welles's Citizen Kane (1941) is frequently cited in critics' polls as the greatest film of all time.
A disaster is a natural or man-made (or technological) hazard resulting in an event of substantial extent causing significant physical damage or destruction, loss of life, or drastic change to the environment. A disaster can be ostensively defined as any tragic event stemming from events such as earthquakes, floods, catastrophic accidents, fires, or explosions. It is a phenomenon that can cause damage to life and property and destroy the economic, social and cultural life of people.
In contemporary academia, disasters are seen as the consequence of inappropriately managed risk. These risks are the product of a combination of both hazard/s and vulnerability. Hazards that strike in areas with low vulnerability will never become disasters, as is the case in uninhabited regions.