This book offers a rich compilation of research exploring key areas within "Theory and Applied Macroeconomics." Drawing on contributions from scholars at various academic institutions, the volume addresses a wide array of macroeconomic topics, ranging from foundational theories to practical analyses of complex economic systems. The research highlights pressing challenges and developments in macroeconomic policy, growth, inflation, monetary and fiscal dynamics, and global economic interconnectivity. Through a combination of innovative theoretical approaches and empirical studies, this book serves as a valuable resource for academics, practitioners, and students seeking expand their understanding of modern macroeconomic thought and its implications for real-world decision-making