What major milestone did the Wright Brothers aim for after their initial flights?

The Wright Brothers aimed to develop a practical aircraft for commercial use after their initial flights because they recognized the importance of creating a viable means of transportation that could be utilized beyond mere experimentation. Their early successes at Kitty Hawk demonstrated that controlled, sustained flight was possible, but they understood that for aviation to have a lasting impact, it needed to be applicable in real-world scenarios and accessible to the public. Their goal included making advances in engine power, stability, and control, which would eventually lead to the design and construction of airplanes that could carry passengers and cargo safely and efficiently. This was a significant step towards the establishment of an aviation industry that would transform transportation and communications around the world. The other options, while important in various contexts, did not align with the immediate objectives of the Wright Brothers at that stage in their journey toward making flight a prevalent feature of modern life.