ILL GIVE BRAINLIEST Why did the Mongols repeatedly fail to conquer the Sung dynasty before Kublai Khan's conquest?
The Sung army had trebuchets.
The Sung army had a blockade.
The Sung army had battering rams.
The Sung army had greater numbers,

The Sung army had a blockade

Explanation:

However, the Song dynasty was difficult to conquer because of the strategic location of Xiangyang, which became a vital position for Kublai to capture and hold. The city guarded the waterways of South China because the Han River was a major tributary into the Yangtze River.

the Sung army had trebuchets

Explanation:

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the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.

answer: the risk-return relationship. generally, the higher the potential return of an investment, the higher the risk. there is no guarantee that you will actually get a higher return by accepting more risk. diversification enables you to reduce the risk of your portfolio without sacrificing potential returns.

explanation: