Question

Use the drop-down menus to complete the sentences.

During the Tang and Sung dynasties, the
aided navigation for sea travel.
The development of
produced fireworks and changed warfare.
The use of
increased reading in China.
issued by the Sung dynasty made travel and trade easier for merchants.

Answer 1

Answer:1. b 2.b 3.b

Step-by-step explanation:

Answer 2

all four are b

Step-by-step explanation:

edg 2020 have a great day