What is the monroe doctrine and how has it impacted the americas in the 20th century?

Ineed this asapwhich practice is most likely to have been supported by conservatives in europe in the 1800s? a. all citizens were granted voting rights and allowed to apply for government jobs. b. a monarch made key political decisions based on input from advisors. c. the people elected the national leaders. d. national leaders and laws relied on legitimacy from the people.