Which of the best summarizes the monroe doctrine

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?

Apex plz i’m almost done if i get this all right

What impact did new technologies in the assembly and manufacturing have on the auto industry in the 1920s