How did new technologies change business in the 1920s? check all that apply. new taxes were introduced. new ways to operate equipment were developed. new products were invented. more efficient ways to manufacture goods were designed. manufacturing became more expensive.

The correct answer should be New ways to operate equipment were developed, new products were developed, and more efficient ways to manufacture goods were designed. This was the period of the roaring twenties when the economy boomed before the great depression came and destroyed everything.

Your answer is b , public works