What were some advancements in technology in the 7th century A.D.?

[alex]

So yeah i need to write a 2 paragraph essay on 7th century advancements in technology so can anyone who answers it give me enough info for at least 2 paragraphs. THANK YOU

[xo379]

* heavy plow in use in the Rhine valley
* horse collar in use in Northern Europe in 8th or 9th century — perhaps introduced from Asia
* papermaking introduced from China to Arabs
* beginning of the decline of the Classical Maya civilization
* ca. 770 — iron horseshoes come into common use
* Pattadakal, Chalukya Architecture
* The Chinese Buddhist monk Yi Xing applies the first known clockwork escapement mechanism to operate and rotate his astronomical celestial globe
* The Pictish peoples of Scotland design the first European triangular harp

[cree g]

thye could water their crops in the field easily