What started the modern agricultural revolution?

Improved farming methods started the Agricultural Revolution.

The Agricultural Revolution marked a period of technological advancement and increased crop productivity that took place during the 18th and early 19th centuries in Europe. It marked an unprecedented growth in agricultural production in Britain as a result of increases in labour and land productivity

Agricultural output increased faster than the population over the century to 1770, hence productivity remained among the highest in the world.

a case involving the laws of a single state.

1. it was caused by feudalism

2. charlemagne used christianity as a major cornerstone for his rule. cloisters were built all over the empire to act as centers for the (re)population of the vast european wilderness.

3. the europeans feared the next raid every time chetak

i'm not so sure about #6. but i hope i you with the first 3.