Final answer:
Immigrants from poor countries have sent billions of dollars back to their countries in remittances, with a total of $800 billion sent globally in 2022, according to the World Bank's estimates.
Step-by-step explanation:
According to the World Bank's estimates, immigrants from poor countries have sent billions of dollars in traceable remittance back to their country of origin. This financial aid, known as remittances, is crucial for the recipients, often constituting a significant part of their income and supporting their basic needs for survival. In 2022, migrants worldwide sent $800 billion in remittances to their families, according to the World Economic Forum. The United States is the top country sending remittances, with an estimated 68 billion U.S. dollars in transfers. For many communities, especially in Mexico, these payments from their nationals living abroad are the second-largest source of foreign income.