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the first radio
the early history of radio is the history of technology that produced radio instruments that use radio waves .this was the first way ever that people worldwide all heard the same voice in their homes. the radio is electric signals through the atmosphere. -
first telephone
march 10,1876 the invention of the telephone is the culmination of work done by many individuals,the history of which involves a collection of claimsand counterclaims. -
great migration
more than 6 million african americans from the rural south to the cities of the north midwest an west an west. in 1916 to 1970 impacted the world in many ways. this meant more people an less food -
emergency quota act
emergency qouta act of 1921 the emergency qouta act, also known as the emergency immigration act 1921, the immigration restriction act of 1921, the per centum law, and the johnson quota act may 19, 1921 restricted immigration to the united states. -
immigration act of 1924
the immigration act of 1924 johnson-reed act, including the national origins act, and asian exclusion act, 43 state 153. enacted may 26, 1924), was a united states federal law that limmited the annual number of immigrants. -
television
march 25,1925 television or also known as T.V. is a telecommunication medium that is used for transmitting and receiving moving images and sound. -
black tuesday
october 1929 the wall street crash of 1929, also known as black tuesday. the stock market crash of 1929, began in late october 1929.this was the most devastating stock market crash in the history of the united states. when talking about the full extent and duration of its fall out -
black thursday
black thursday the name given to thursday oct. 14th 1929. when the dow jones industrial average plunged 11% at the open in very heavy volume. preciptating the wall street crash 1929 and the subsequent great depression of the 1930's -
hoover dam
hoover dam, ounce known as boulder dam. a concrete arch- gravity dam in the black canyon of the colorado river. on the boarder between the U.S. states of arizona and nevada, this was finished early and did not require any money. -
1933 state of economy
act of congress that cut the salaries of federal workers. reduced benefit payments to veterans, moves intended to reduce the federal dificit in the united states -
franklin d roosevelt
elected in 1933, franklin D. roosevelt was a reasurring presence for many americans through the trials of the great depression. served at the 32nd presadent. franklin was a democrat an was elected four times. -
GI bill of rights
officially the service mens's reajustment act of 1944. the G.I. bill was created to help vetrans of world war 2 president fraklin signed the G.I. bill of rights. -
first computer
febuary 15, 1946 the first computer resembling todays modern machines. the analytical engine, a device conceived.this was designed by british mathmatician charles babbage. -
internet
internet came out around the arpanet used packet switching to allow multiple computers to cummunicate on a singel network. was the first way to get info faster an opened the gate for many things that make our lives easier today. -
the 21th century
january 1, 1901 the 21st century is the current century of the anno domini era or the common era. in accordance with the gregorian calander. it began on january 1, 2001, and will end on december 31, 2100