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Car
An automobile, motor car or car is a wheeled motor vehicle used for transporting passengers, which also carries its own engine or motor. Most definitions of the term specify that automobiles are designed to run primarily on roads, to have seating for one to eight people, to typically have four wheels, and to be constructed principally for the transport of people rather than goods -
radio
Radio is the transmission of signals by modulation of electromagnetic waves with frequencies below those of visible light Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space. Information is carried by systematically changing some property of the radiated waves, such as amplitude, frequency, phase, or pulse width. When radio waves pass an electrical conductor, the oscillating fields induce an alternating current in the -
telephone
The telephone often referred to as a phone, is a telecommunications device that transmits and receives sound, most commonly the human voice. Telephones are a point-to-point communication system whose most basic function is to allow two people separated by large distances to talk to each other. -
The Great Migration
The Great Migration was the movement of 2 million African Americans out of the Southern United States to the Midwest, Northeast and West from 1910 to 1930. African Americans migrated to escape racism and to seek jobs in industrial cities. -
18th Amendment
The Eighteenth Amendment of the United States Constitution, along with the Volstead Act, which defined "intoxicating liquors" excluding those used for religious purposes and sales throughout the U.S., established Prohibition in the United States. Its ratification was certified on January 16, 1919. It was repealed by the Twenty-first Amendment in 1933, the only instance of an amendment's repeal. The Eighteenth Amendment was also unique in setting a time delay before it would take effect following -
Television
Television is the most widely used telecommunication medium for transmitting and receiving moving images that are either monochromatic "black and white" or color, usually accompanied by sound. -
Emergency Quota Act
The American, Emergency Quota Act, of May 19, 1921, restricted immigration into its country; the act imposed a quota that limited the number of immigrants who would be admitted from any country annually to 3% of the number of residents from that same country who lived in the United States -
Immigration Act of 1924
The Immigration Act of 1924, including the National Origins Act, Asian Exclusion Act, was a United States federal law that limited the number of immigrants who could be admitted from any country to 2% of the number of people from that country who were already living in the United States in 1890, down from the 3% cap set by the Immigration Restriction Act of 1921, according to the Census of 1890. It superseded the 1921 Emergency Quota Act. -
Computer
A computer is a programmable machine that receives input, stores and automatically manipulates data, and provides output in a useful format. Mechanical examples of computers have existed through much of recorded human history. The first electronic computers were developed in the mid-20th century (1940–1945). Originally, they were the size of a large room, consuming as much power as several hundred modern personal computers -
Internet
The Internet is a global system of interconnected computer networks that use the standard Internet Protocol Suite (TCP/IP) to serve billions of users worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks, of local to global scope, that are linked by a broad array of electronic, wireless and optical networking technologies.
