The correct answer is Musket. Explanation & Key Takeaways: • Musket means 'A heavy gun used by infantry soldiers'. • Matchlock was an early type of gun in which the powder was ignited by a match. • Sawars are trained soldiers on horseback. • Infantry is, Paidal (foot) soldiers. Related Concepts: • Colonial rule in India brought in some new ideas of administration and reform but its power rested on its military strength. • The Mughal army was mainly composed of cavalry (sawars: trained soldiers on horseback) and infantry, that is, paidal (foot) soldiers. • A change occurred in the eighteenth century when Mughal successor states like Awadh and Benaras started recruiting peasants into their armies and training them as professional soldiers. • The East India Company adopted the same method when it began recruitment for its own army, which came to be known as the sepoy army (from the Indian word sipahi, meaning soldier). • As warfare technology changed from the 1820s, the cavalry requirements of the Company’s army declined. • This is because the British empire was fighting in Burma, Afghanistan, and Egypt where soldiers were armed with muskets and matchlocks.