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car invetion
The history of the automobile begins as early as 1769, with the creation of steam engined automobiles capable of human transport. In 1806, the first cars powered by an internal combustion engine running on fuel gas appeared, which led to the introduction in 1885 of the ubiquitous modern gasoline- or petrol-fueled internal combustion engine. Cars powered by electric power briefly appeared at the turn of the 20th century, but largely disappeared from use until the turn of the 21st century. -
Telephone invetion
In the 1870s, two inventors Elisha Gray and Alexander Graham Bell both independently designed devices that could transmit speech electrically (the telephone). Telephone is a wire-based electrical systems, and Alexander Graham Bell's success with the telephone. -
The Great Migration
Was the movement of 6 million blacks out of the Southern United States to the Northeast, Midwest and West. They moved to the north becasue they wanted to escape the violence and lynching in the South.So they moved to the north to find better places to live and better schools and more jobs. -
18th amendment
The 18th Amendment to the U.S. Constitution banned the manufacture, sale, and transportation of alcohol.In the over 200 years of the U.S. Constitution, the 18th Amendment remains the only Amendment to ever have been repealed. Here is the complete text of the 18th Amendment. -
the 19th Amendment
The 19th amendment guarantees all American women the right to vote. Achieving this milestone required a lengthy and difficult struggle; victory took decades of agitation and protest.On May 21, 1919, the House of Representatives passed the amendment, and 2 weeks later, the Senate followed. -
television invetion
The first regularly scheduled television service in the United States began on July 2, 1928.The fundamental principles of television were initially explored using electromechanical methods to scan, transmit and reproduce an image. As electronic camera and display tubes were perfected, electromechanical television gave way to all-electronic broadcast television systems in nearly all applications. -
Emergency Quota Act
The Emergency Quota Act of 1921 limited the amount of immigrants of a nationality that could immigrate to the US to less than 3 % of the number of immigrants of that nationality already living in the United States. The Act, although discriminatory, was designed to give native U.S. citizens easier access to jobs without competition, and increase wages. Many Americans favored the Act due to their bias toward foreigners. -
Immigration Act 1924
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 according to the census of 1890. It superseded the 1921 Emergency Quota Act. The law was aimed at further restricting the Southern and Eastern Europeans who had begun to enter the country in large numbers beginning in the 1890s, as well as East Asians and Asian Indians, who were prohibited from immigrating entirely. -
radio invention
Radio is the transmission of signals through free space by modulation of electromagnetic waves with frequencies below those of visible light.This can be detected and transformed into sound or other signals that carry information -
Black Thursday
The day the famous stock market crash of 1929 began, when the stock market began its plummet. The stock market was very unstable for the subsequent few days. This uncertainty led up to Black Tuesday, October 29, the day which experienced the largest percentage decrease in stock prices and is considered to be the start of the Great Depression. -
Black Tuesday
the day the New York Stock Exchange crashed. This means that the prices for stock were too high, far higher than they were really worth. Then they fell sharply. People who had unwisely borrowed money to buy high-priced stocks.The stock market was only one cause of the Great Depression, however. Unequal income distribution was another problem. -
Hoover Dam constructed
once known as Boulder Dam, is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the US states of Arizona and Nevada. It was constructed between 1931 and 1936 during the Great Depression and was dedicated on September 30, 1935, by President Franklin Roosevelt. -
Franklin D. Roosevelt elected president
was the 32nd President of the United States (1933–1945) and a central figure in world events during the mid-20th century, leading the United States during a time of worldwide economic crisis and world war -
21st amendment
The 21st Amendment to the Constitution reversed the 18th Amendment, which had made alcoholic beverages illegal.On December 5, 1933, President Franklin Delano Roosevelt signed the proclamation which officially put an end to Prohibition. -
computer
Konrad Zuse was a construction engineer for the Henschel Aircraft Company in Berlin, Germany at the beginning of WWII. Konrad Zuse earned the semiofficial title of "inventor of the modern computer" for his series of automatic calculators, which he invented to help him with his lengthy engineering calculations. -
GI Bill of Rights
was an omnibus bill that provided college or vocational education for returning World War II veterans as well as one year of unemployment compensation. It also provided many different types of loans for returning veterans to buy homes and start businesses. Since the original act, the term has come to include other veteran benefit programs created to assist veterans of subsequent wars as well as peacetime service. -
Internet invention
starts in the 1950s and 1960s with the development of computers. This began with point-to-point communication between mainframe computers and terminals, expanded to point-to-point connections between computers and then early research into packet switching.In 1982 the Internet Protocol Suite (TCP/IP) was standardized and the concept of a world-wide network of fully interconnected TCP/IP networks called the Internet was introduced. -
Frisbee invented
by a Californian UFO enthusiast named Walter Frederick. But he didn’t call it a Frisbee. The Wham-O company bought his idea for a toy saucer, and later named it after a popular pie restaurant in Bridgeport, Connecticut.
