The height of the second agricultural revolution coincided with

Industrial revolution

Explanation:

The unparalleled increase in the land and labour productivity in Britain from mid 17th and 19th centuries is known as Second Industrial Revolution.

The agricultural output grew much faster than the population till 1770s and after that it remained highest in the world and it caused the growth of Wales and England from 5.5 million to 9 million between 1700 and 1801.

The rise in productivity freed the labour force which moved to urban areas and contributed in Industries. Agricultural revolution is considered to be the cause of Industrial revolution.

explanation:

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the  equal rights amendment  (era) states: "equality  of  rights  under the law shall not be denied or abridged by the united states or by any state on account of sex." congress first introduced the era in 1923, but the campaign for ratification took off in the 1960s during the  civil rightsmovement.