In the 1400s, ruled their own lands and waged war against their neighbors. a. vassal c. samurai b. shogun d. daimyo

The correct alternative is d. daimyo.

After the 8th century Japan breakdown, private landholdings were first consolidated into estates under authority of the civil nobility and religious establishments. During the 11th and 12th centuries, the military class (samurais) increased in numbers and importance, birthing the term daimyo, which were the military lords who had territorial control over private estates which divided the country. In the 14th and 15th centuries the daimyos were appointed as military governors and held legal jurisdiction over provinces-sized areas. By the late 15th century Japan had been divided into a series of small states in which individual daimyos competed for the control of more territory.

the answer is d damaiyo

Explanation:

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that would be the steamboat because none of the other things are forms of transportation