The diamond sutra refers to the first

a) gunpowder factory in china

b) emperor to use gunpowder in war

c) invention to be achieved by the tang

d) book to be printed using wooden blocks

The answer is  D) book to be printed using wooden blocks.

Explanation:

The Diamond Sutra, a Buddhist text, is dated 868 AD. It is a work belonging to the period of the Tang dynasty in China. It is kept in the British Library. It was discovered by a monk in Dunhuang, China, in 1900. The place is an old outpost of the Silk Road.

the triple alliance. germany and austria-hungary were already allies by 1879 when, worried about a threat from russia, they formed the dual alliance. italy joined the group in 1882. there was a concern about a possible attack from france and the alliance needed powerful friends to defend it.

i see, would you mind putting it as one?