The discovery of the remains of a dockyard at Lothal prove that the people of Indus valley had- (a) international trade relations.
(b) expertise in ship building,
(c) an organised naval force.
(d) flourishing trade within India.

(a) international trade relations.

Explanation:

The discovery of the remains of a dockyard at Lothal prove that the people of Indus valley had "international trade relations."

The remains of the dockyard at Lothal were discovered in 1954. Following the scientific analysis of the Archeological Survey of India, and later discovery of foraminifera (marine microfossils) and salt by the National Institute of Oceanography, Goa, it was concluded that Lothal was a significant and prosperous trade centre in olden ages. And the trading activities involved international partners including the west Asia and Africa.

b. ensure mutual protection from communism.

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the correct statement is letter a.   according to the mandate of heaven, kings were considered godlike beings, so they could do as they .

the mandate of heaven is a chinese political and religious ideology used since ancient times to justify the rule of the king or emperor of china, that has been in place since the zhou until the dynasty system ended. it has been created to justify the zhou as the main power of the region. in order to keep harmony, the ruler has to make what he wants and what people want. he had to make good choices to satisfy the people and then they will be happy and keep you in power.