9) What was invented during the Tang Dynasty to make fireworks?

Gunpowder.

Explanation:

They put the gunpowder into the bamboo sticks and made it explode into the sky.

what are local authorities doing to fix the problem

explanation:

the best description of postwar writers might be progressive.

following the war, writers showed a tendency to work on artistic or social matters rather than political themes. while postwar literature may not have been the greatest period of english literature, the themes provided excellent critics a high number of novels. such examples include anthony burgess, anthony powell and frank kermode, all of which can be placed under the progressive view.