If you are talking about WW1, then the 3 factors are the Zimmerman Telegram, The sinking of the Lusitania, and economic interests
John F. Kennedy
"Ask not what your country can do for you - ask what can you do for your country"
Answer:
Henry Ford was determined to build a simple, reliable and affordable car; a car the average American worker could afford. Out of this determination came the Model T and the assembly line - two innovations that revolutionized American society and molded the world we live in today.
<span>The development of vaccines was presented as an important revolution in pharmacology for many reasons. The development of both vaccines and antibiotics helped control major communicable diseases, the development of psychopharmacology and psychoactive drugs were used to treat mental illness, and the development of the oral contraceptive as a pharmacological approach were used in family planning.</span>
