The 1920s were a decade of great prosperity for a great many people even though it was capped on both ends by very dark events. when selecting events so that you do not choose events that span several years as you need a unique event for each year. The info you will select for each year needs to be fully detailed so that the reader fully understand the event, who it affected the most, and specifically why it's important.
Explain what you think were the best parts of this decade and explain why.
1920 - August 17th, The Nineteenth Amendment to the Constitution is ratified granting women the right to vote in national elections. Women had already been granted the right to vote in several states but the 19th Amendment allowed to women to vote in every election in the US whether at the state or national level. More here: http://law2.umkc.edu/faculty/projects/ftrials/conlaw/nineteentham.htm
1921 - May 18th, European immigration quotas are instituted for the first time in American History. The quotas were designed to limit the immigration of eastern and southern Europeans while encouraging the immigration of northern and western Europeans. More here: http://www.faculty.fairfield.edu/faculty/hodgson/courses/so11/race/quota_acts.htm
1922 - February 22nd, Washington Naval Treaty is negotiated limiting construction of Capital Ships by the five largest naval powers. The treaty was negotiated and signed by Britain, the US, Japan, France and Italy. It limited construction of Battleships, Battlecruisers and Aircraft Carriers. The aim of the treaties was to avoid an arms race similar to what had occurred between England and Germany prior to World War I. More her: http://history.state.gov/milestones/1921-1936/NavalConference
1923 - Jan 10th, Final US occupation troops leave he Rhineland in ...
A years by year list of the most significant events of 1920's America. This list attempts to stay away from political analysis instead focusing on which cultural, technological, and economic events had the greatest impact on America in the decades following the 20's.