Rapid expansion refers to how quickly an empire or state grows its territory through conquest or colonization. In this context, it specifically relates to how fast the Mongol Empire expanded during the 13th century.
Related terms
Conquest: Conquest means gaining control over territory by force or military campaigns. The rapid expansion of an empire usually involves conquest of new lands.
Horseback Warfare: Horseback warfare refers to battles fought on horseback. The Mongols were renowned for their exceptional horsemanship and effectively utilized it as a key strategy during their rapid expansion.
Siege Warfare: Siege warfare involves surrounding and attacking a fortified city or castle until its defenses are breached. The Mongols employed siege tactics to conquer heavily fortified cities during their expansion.