Question

Read the passage.

Answer 1

Royalty there demanded protection from the sun, and people developed the umbrella for this purpose.

In these sentences, the creation of the umbrella happened for a very specific purpose. Using the conjunction "and", following the reason for its creation helps to connect the two events clearly. 

Answer 2

Answer:

People developed the umbrella for the purpose of protection from the sun, which royalty demanded.

Explanation:

The best way to combine the two sentences is to add them with a conjunction. IN the above sentence, the conjunction is 'which'. The word 'which' has joined the two sentences. Also, the sentence focuses on the purpose of the umbrella which should be written in the first part of the sentence.