Shantytowns, also known as slums, informal settlements, or squatter settlements, are mostly found in developing countries. They are often characterized by overcrowding, lack of sanitation, poor infrastructure, and inadequate access to basic necessities. Other synonymous expressions that have been used to describe shantytowns are favelas (in Brazil), barrios (in Latin America), bidonvilles (in French-speaking regions), and bastis (in South Asia). These areas are typically inhabited by low-income families who cannot afford decent housing. The governments in these countries, along with international organizations and NGOs, have established various strategies to improve the living conditions in these areas, such as increasing access to health care, education, and safe water, as well as providing affordable housing options.