First language acquisition is the process by which infants and young children learn to understand and speak their native language. This remarkable ability begins even before birth, as babies can recognize the sounds and rhythms of their mother's voice and the language spoken around them. Through interactions with caregivers, children pick up words, phrases, and the rules of grammar, often without formal instruction. As children grow, they experiment with language by mimicking sounds and forming sentences. This natural learning process is influenced by their environment, including the conversations they hear and the stories they are told. Ultimately, first language acquisition is a vital part of cognitive and social development, helping children connect with others and express their thoughts.