Answer:
Propelled
Explanation:
Propel means to push forward. So the meaning of the sentence would change as it would become "however, the battle (pushed forward) Lee's plans to invade the North for the time being." This completely changes the meaning of the sentence as halt means to stop and propel means to go.
A is the correct answer.
Westinghouse was a prolific inventor who also invented the air brake which made railroad travel safer & faster.
