Write the events which happened on the given dates : 1. January 1915 2. April 1919 3. January 1921 4. February 1922 5. December 1929 6. March 1930 7. March 1931 8. December 1931 9. September 1932 10. 1932

 Here are notable events that occurred on the specified dates:

1. January 1915: The first German Zeppelin airship raid on London occurred, marking a significant moment in World War I air warfare.

2. April 1919: The Paris Peace Conference continued, leading to the signing of several treaties, including the Treaty of Versailles. This event was crucial in shaping post-World War I Europe.

3. January 1921: The United States introduced the "Emergency Quota Act," which limited immigration by establishing quotas based on national origins, significantly affecting immigration policies.

4. February 1922: The first Radio Corporation of America (RCA) broadcasting station began regular broadcasts, marking a significant advancement in radio technology and communication.

5. December 1929: The Great Depression began in the United States, following the stock market crash in October 1929, which led to widespread economic hardship.

6. March 1930: The Smoot-Hawley Tariff Act was signed into law in the United States, raising tariffs on imports, which many economists believe worsened the Great Depression.

7. March 1931: The 21st Amendment to the United States Constitution was ratified, repealing Prohibition and allowing the sale and consumption of alcoholic beverages.

8. December 1931: The Statute of Westminster was enacted in Canada, granting legislative independence to the self-governing dominions of the British Empire, marking a significant step toward independence.

9. September 1932: The first report on the economic status of Germany after the onset of the Great Depression was released, highlighting the severe impact of the economic crisis on the German economy.

10. 1932: The Bonus Army, a group of World War I veterans, marched on Washington, D.C., demanding early payment of bonuses promised to them for their military service, highlighting the struggles of many Americans during the Great Depression.

These events illustrate significant historical moments during the early 20th century, especially in relation to World War I, economic policies, and social changes.