The Dawes Plan addressed the collection of the German reparations following WW1.  

The major accomplishments and the famous, main events that occurred during the time that Calvin Coolidge was president included the Immigration Act of 1924, the Revenue Acts of 1924 and 1926, the National Origins Act of 1924 and the Kellogg-Briand Pact (1928). 1926 saw the introduction of the Air Commerce Act and Charles Lindbergh made his transatlantic flight in May 1927. Calvin Coolidge died due to heart failure on January 5, 1933, aged 60. The next president was Herbert Hoover.

Birthday: July 4, 1872

Place of Birth: Massachusetts

Political Party: Republican

Nickname: Silent Cal

Number: 30th President

Vice President: Charles G. Dawes

Age at Inauguration: 51

Height: 5 feet 10 inches

Weight: 148 pounds

First Lady: Grace Coolidge

Religion: Congregationalist

Date of Death: January 5, 1933

Date of Calvin Coolidge Presidency: August 2, 1923 to March 4, 1929

The Nickname of Calvin Coolidge: Silent Cal
The nickname of President Calvin Coolidge provides an insight into how the man was viewed by the American public during his presidency. The meaning of the Calvin Coolidge nickname "Silent Cal" or "Cautious Cal" refers to his quiet nature, a man of few words during social occasions

Character and Personality Type of Calvin Coolidge
The character traits of President Calvin Coolidge can be described as reserved, undemonstrative, cautious and independent. It has been speculated that the Myers-Briggs personality type for Calvin Coolidge is an INTJ (introversion, intuition, thinking, judgment). A reserved, analytical and insightful character with a strong sense of independence. Calvin Coolidge Personality type: pragmatic, logical, individualist and creative.

Accomplishments of Calvin Coolidge and the Famous Events during his Presidency
The accomplishments of Calvin Coolidge and the most famous events during his presidency are provided in an interesting, short summary format detailed below.

The Roaring Twenties
Summary of the Roaring Twenties: Calvin Coolidge was president during the period in the United States known as the Roaring Twenties. The period saw the great Economic Boom of the 1920's with the rise of Consumerism, the popularity of Radio and Advertising and the Inventions in the 1920's that shaped America during this period. There was time for leisure and Sports in the 1920's were broadcast live across the nation and famous sports stars were idolized, as were the silent movie stars of Hollywood in the 1920s. The rapidly changing role of  Women in the 1920's led to changes in 1920's Fashion and the emergence of the Flappers and the Jazz Age.

Prohibition Gangsters
It was also the era of Prohibition which led to the rise of the Prohibition Gangsters, mobsters and 'bootleggers' who profited from the illegal sale of liquor during the Prohibition Era (1920 to 1933).

Isolationism in the 1920's
Summary of Isolationism in the 1920's: The foreign policy of Isolationism in the 1920's was adopted by Calvin Coolidge that aimed at self-advancement to make the United States economically self-reliant whilst retaining peace with other nations.

The Mellon Plan
Summary of the Mellon Plan: The Mellon Plan was a package of economic legislation,  which reduced taxes on the wealthy and the corporations in America that encouraged growth and led to the boom in stock market investments. The Mellon Plan was proposed in 1924 and became the Revenue Act of 1924.

Revenue Act of 1924
Summary of the Revenue Act of 1924: The Revenue Act of 1924 was part of the Mellon Plan to lower tax rates but included a gift tax for the wealthy. The law also established the U.S. Board of Tax Appeals.

Revenue Act of 1926
Summary of the Revenue Act of 1926: The Revenue Act of 1926  addressed objections to the Revenue Act of 1924 by eliminating the gift tax and and ended public access to federal income tax returns. reduced the maximum individual tax rate from 40% to 25%. The Revenue Act of 1926 also  reduced inheritance and personal income taxes and cancelled many excise taxes.

Immigration Act of 1924
Summary of the Immigration Act of 1924: The Immigration Act of 1924 established National origin quotas as a permanent basis for U.S. immigration policy.

National Origins Act of 1924
Summary of the National Origins Act of 1924: The National Origins Act of 1924 made immigration restriction a permanent US policy.

US-Mexican Border Control
Summary of the US-Mexican Border Control: The Labor Appropriation Act of 1924 established the Border Patrol and Border Stations US-Mexican Border Control.

Resurgence of the Ku Klux Klan in the 1920's
Summary of the Resurgence of the Ku Klux Klan: Fear and suspicion triggered by the anti-radical and anti-immigrant hysteria of the Red Scare led to the Resurgence of the Ku Klux Klan in the 1920s and the march of the hooded and robed KKK down Pennsylvania Avenue in Washington on August 8, 1925.

1926 Air Commerce Act
Summary of the 1926 Air Commerce Act: The 1926 Air Commerce Act was approved on May 19, 1926 and placed responsibility for aircraft, pilots and airlines with the government 

Charles Lindbergh Transatlantic Flight
Summary of Charles Lindbergh Transatlantic Flight: The Charles Lindbergh Transatlantic Flight was  the first nonstop solo flight across the Atlantic Ocean, from New York City to Paris, in May 1927 in a Ryan airplane that was nicknamed the Spirit of St. Louis.

The 1928 Kellogg-Briand Pact
Summary of the Kellogg-Briand Pact: The Kellogg-Briand Pact was a treaty, signed in Paris on August 27, 1928 between the United States and 62 other nations, that was inspired by the belief that diplomatic agreements could put an end to wars.

Al Capone
Summary of Al Capone: The most notorious of all the Prohibition gangsters was Al Capone (1899-1947). Despite his violent reputation and his connection with organized crime Al Capone some viewed him as a 'Modern day Robin Hood' whereas others saw him as a dangerous mobster. 

The Chicago Mafia
Summary of the Chicago Mafia: The Chicago Mafia was an Italian-American crime syndicate and part of the organized crime wave led by Al Capone.

St. Valentine's Day Massacre
Summary of the St. Valentine's Day Massacre: The hostility between gangsters Al Capone and George “Bugs” Moran during Prohibition led to the infamous St. Valentine's Day Massacre in Chicago on February 14, 1929, just before the end of the Calvin Coolidge presidency.