Global recessions are often caused by several interdependent factors, such as high oil prices, a rapid decline in asset prices, a sharp increase in the cost of borrowing, and a decrease in consumer confidence. In some cases, even a single country's financial problems can, due to globalization, cause a recession in other countries as well.

In the most severe cases, global recessions can lead to reduced international trade, unemployment, and a decrease in economic growth. These impacts can last for years after the recession has ended, depending on the individual economy and its particular circumstances.

One of the most visible signs of a global recession is large-scale decline in international trade. With many interconnected economies, global recessions can lead to a decline in the demand for imported goods and services as well as an increase in the number of businesses that can no longer afford to export products and services. This decline ultimately affects global economic growth.

The decline in economic activity also leads to an increase in unemployment, which further reduces consumer spending and stagnates economic growth. This decrease in consumer spending can have a ripple effect throughout the global economy and further deepen a global recession.

Finally, global recessions can lead to a decrease in international investments. When investors become uncertain of their returns in a global recession, they can choose to invest little or no money in other countries. This can lead to a fortification of domestic markets and a more illiquid international investment pool.

A global recession can last for several months or even years, and its effects can be short- and long-term depending on the severity. In order to make sure individual economies survive a global recession, governments typically enact aggressive fiscal and monetary policies to stimulate the economy and protect their citizens from financial hardship. Such policies include reducing interest rates, increasing spending, and engaging in international trade agreements. Additionally, countries can also make use of international organizations, such as the International Monetary Fund, to receive emergency funding and advice.

In conclusion, global recessions are significant periods of economic decline that can affect interconnected economies in different ways. They can lead to reduced international trade, increased unemployment, and decreased economic growth. In order to help their citizens through such periods, governments need to implement aggressive policies to revitalize the economy and seek advice from international organizations when necessary.