This book covers a lot of ground in contemporary macroeconomics, from fundamental theories such as market structures and equilibrium to emerging concepts that reflect the most critical challenges of modern times, including economic slowdowns, the resilience of public health systems, digitalization, environmental footprints, and many more. The COVID-19 outbreak has aggravated the recurrent problems of poverty and income inequality between countries, food insecurity and hunger, unemployment, and social disorders that have resulted in the exacerbation of political, economic, and trade...