big number of Latin American countries is poor. So due to the nationalization of resources more income goes to the government. Nationalization also excludes the possibility of resource income benefiting foreign interests. Furthermore, nationalization helps reduce inequality between social layers. When individuals or companies possess resources, there is often a larger income gap between the wealthy and the poor.
Answer: Old shells, or pieces of old shells, pressed together because limestone is made from bones that are parts of the skeleton that got squished together.