Infrastructure refers to the support systems that contribute to the economic and social development of a country. There are two main types of infrastructure: economic infrastructure and social infrastructure. Economic infrastructure supports production activities, like transportation and communication. Social infrastructure supports social development through institutions like schools, hospitals, and nursing homes. Both economic and social infrastructure are complementary and important, as economic growth requires social development as well. Infrastructure contributes to economic development by promoting productivity, inducing investment, generating linkages in production, enhancing market size, and improving ability to work.