Okay, here is a breakdown of the most significant events of 1929, presented in a Wikipedia-style format:

1929

1929 was a pivotal year, marked by both significant advancements and the onset of a global economic crisis. It witnessed important developments in politics, science, culture, and technology, with repercussions that shaped the course of the 20th century.

Politics and Economics

• January 20: Inauguration of Herbert Hoover as the 31st President of the United States. Hoover, a Republican, entered office promising continued prosperity, but his presidency would soon be defined by the Great Depression.
• March 4: The United States Congress officially establishes the United States Veterans Administration (VA), consolidating various veterans' programs.
• October 24 (Black Thursday): The Wall Street Crash of 1929 begins, marking the start of the Great Depression. A record 12.9 million shares were traded on the New York Stock Exchange, triggering a wave of panic selling. This event profoundly impacted the United States and the global economy.
• October 29 (Black Tuesday): The most devastating day of the Wall Street Crash. Over 16 million shares were traded, and the market plummeted, wiping out billions of dollars in investment and signaling the beginning of a prolonged economic downturn. The Great Depression soon followed, profoundly impacting the United States and the world.
• Young Plan Implemented: The Young Plan, aimed at reducing Germany's World War I reparations, is put into effect. However, the onset of the Great Depression undermined its long-term viability.
• Lateran Treaty: Italy and the Vatican City sign the Lateran Treaty, resolving the "Roman Question" and establishing the Vatican City as an independent state.

Science and Technology

• Alexander Fleming publishes his work on Penicillin: Alexander Fleming published his groundbreaking paper in the British Journal of Experimental Pathology which announced his discovery of the properties of Penicillin.
• Paul Dirac postulates the existence of the positron, the antiparticle of the electron. This prediction was later confirmed experimentally.
• First successful human electroencephalography (EEG): Hans Berger records the first human EEG, a method for recording electrical activity of the brain.
• Frank Whittle submits his patent for the turbojet engine. While the practical application of Whittle's design was still years away, it represented a crucial step in the development of jet propulsion.

Culture and Arts

• Duke Ellington's orchestra achieves widespread popularity, marking a high point for jazz music and African American cultural expression.
• Publication of All Quiet on the Western Front by Erich Maria Remarque. This anti-war novel became an international bestseller, offering a stark and unflinching portrayal of the horrors of World War I.
• The first Academy Awards ceremony is held. This marked the formal beginning of the Academy Awards, an annual event that recognizes excellence in the film industry.
• Alfred Hitchcock directs Blackmail, considered one of the first British sound films.
• The Museum of Modern Art (MoMA) is founded in New York City. MoMA quickly became one of the most influential art museums in the world, promoting modern art and shaping artistic taste.

Other Significant Events

• January 1: Turkey officially adopts the Latin alphabet, replacing the Arabic script.
• April 10: The United States signs the Kellogg-Briand Pact, an international agreement renouncing war as an instrument of national policy.

1929 stands as a year of stark contrasts. It saw advancements in science, technology, and culture, but it also marked the beginning of a global economic crisis that would profoundly reshape the 20th century. The effects of the Wall Street Crash would be felt for years to come, influencing politics, economics, and societies worldwide.