Simon Kuznets passed away on July 8, 1985, in Cambridge, Massachusetts, USA. His contributions to economics, particularly his work on measuring national income and understanding economic growth and inequality, have had a lasting impact on the field. Today, he is remembered as one of the most influential economists of the 20th century.

In 1973, Simon Kuznets published 'Population, Capital, and Growth: Selected Essays'. This book was a collection of essays that combined demographic analysis with economic theory, showcasing Kuznets' interdisciplinary approach to understanding economic growth. His work illustrated how population changes and capital accumulation influence economic development.

In 1971, Simon Kuznets was awarded the Nobel Memorial Prize in Economic Sciences for his empirically founded interpretation of economic growth, which has led to new and deepened insight into the economic and social structure and process of development. His work provided a clear structural view of economic growth patterns and the dynamics of economic development.

In 1961, Simon Kuznets introduced the concept of Kuznets Cycles, which are medium-term economic cycles lasting 15-25 years. These cycles are characterized by alternating periods of high and low economic activity. Kuznets identified these as distinct from shorter business cycles and longer structural cycles, contributing significantly to economic cycle theory.

In 1955, Simon Kuznets proposed his famous hypothesis on the relationship between economic growth and income inequality. Known as the Kuznets Curve, it suggests that in the early stages of economic growth, inequality increases, but after reaching a certain level of average income, inequality decreases. This theory has been a pivotal point of debate and study in economics.

In 1941, Simon Kuznets published his seminal work, 'National Income and Its Composition, 1919-1938', which included a comprehensive study on the secular movements in production and prices. His analysis provided significant insights into the long-term factors affecting economic activity, establishing a baseline for subsequent studies on inflation, production, and prices.

In 1934, Simon Kuznets published the 'National Income, 1929-1932' report, which was one of the earliest comprehensive measurements of national income and product accounts in the United States. This report was instrumental in standardizing economic reporting and provided the US government and other analysts with critical insights during the recovery from the Great Depression.

In the early 1930s, Simon Kuznets developed the concept of Gross National Product (GNP) as a way to measure the economic activity of a country. His work in this area was pivotal during the Great Depression, as it provided policymakers with a tool to understand the economy better and make informed decisions. GNP became widely adopted as a primary economic indicator.

In 1926, Simon Kuznets began working at the National Bureau of Economic Research (NBER), where he played a crucial role in the study of economic growth. During his tenure, he developed systematic approaches to studying national income and helped establish the field of quantitative economic history. His work laid the foundation for modern national accounting.

Simon Kuznets was born on April 30, 1901, in Kharkiv, then part of the Russian Empire, now Ukraine. He was the son of Abraham and Rachel Kuznets. His early life in a region undergoing significant socio-economic changes influenced his later interest in economics and statistics, eventually leading to his groundbreaking work in economic growth and development.