Brain development refers to the process by which the brain grows and matures, starting from the prenatal stage and continuing into early adulthood. This process involves the formation of neurons, the connections between them, and the overall structure of the brain. Factors such as genetics, nutrition, and environmental experiences play a crucial role in shaping brain development. During early childhood, the brain undergoes rapid growth, with a significant increase in the number of synapses, or connections between neurons. This period is critical for learning and cognitive skills, as experiences can strengthen or weaken these connections. Proper stimulation and a nurturing environment are essential for healthy brain development, influencing future learning and behavior.