How was life change from the 1920 to the present?

How does science grows on the basis of either human curiosity or human need? What are the 3 main powers of Congress? Who was the first person to put milk into tea? What is the origin of not eating anything before the first star or Russian Christmas? Who was the first governor of the colony of New Hampshire? What came after the record player? What is now located at the site where Dr King was assassinated? How did knights engage in combat to defeat their opponents on the battlefield? Who did Braxton Bragg marry? Did religious freedom exist in the British north American colonies prior to 1700? Which colonist believed on fighting for indenpence? Who is the last Maharaja of Nawanagar? Which city-state did Rome fight a series of wars with between 250BC and 150BC? How did Cristopher Columbus die? Where did Bastet rule in Egypt? What continent was the seven years war fiught on? What Major League Baseball stadium to get lights? What religion was practiced in Britain in the early middle ages? What Country has the most world heritage sites? What was the exact day Bay of Pigs started and finished?