The question asks about the meaning of the line 'चल रहे मिला कदम' from the poem 'हम अनेक किंतु एक'. According to the textbook context, this line refers to all Indian people walking together in unity. The poem emphasizes that despite having different provinces, languages, appearances, and customs, all Indians share one motherland and one identity. The line 'एक भारतीय हम' (We are one Indian) precedes this line, making it clear that it refers to all Indians walking together with matched steps toward a common goal.