Final answer:
Guru Angad standardized the Gurmukhi script, introduced the Langar system, and promoted physical fitness, crucially shaping Sikh society.
Step-by-step explanation:
Guru Angad Dev Ji, the second of the ten Sikh Gurus, made significant contributions to Sikhism and its community. He is credited with standardizing the Gurmukhi script as a writing system for the Punjabi language, which became instrumental in spreading the teachings of Sikhism. Guru Angad also promoted the concept of Langar, a communal kitchen to provide meals to all regardless of caste or creed, emphasizing the values of equality and community service.
Moreover, Guru Angad succeeded Guru Nanak Dev Ji in 1539 and was a key figure in establishing Sikhism as a distinct and progressive religion. He emphasized the importance of physical fitness by promoting wrestling and other forms of exercise, fostering the principle of a sound mind in a sound body.