What triggered the surge of conservative governments in central europe at the end of world war i?

a. the disintegration of european families in the wake of urbanization.

b. a worldwide revolutionary upsurge.

c. the revival of the austrian-hungarian and ottoman empires.

d. the british suppression of the indian nationalist movement.

e. the killing of the tsar during the russian revolution?

Which one of the following was not a reason for the emergence of the single-family peasant farm as the basic unit of agricultural production in the early middle ages? select one: a. the mounted soldier made warfare expensive, so many warriors became full-time farmers. b. the declining birthrate made it necessary for entire families to work in agricultural production. c. horses made it easier, although more expensive, for farmers to support themselves. d. it was more economically feasible for landowners to rent their land to farmers. e. villa owners could no longer purchase slaves.