How were presidential nominees selected before the introduction of public convention

How did emperor justinian’s review of roman laws create a more efficient legal system? a. he got rid of outdated and repetitive laws. b.he ranked the laws according to importance. c.he created new laws to address modern situations. d.he combined minor laws into stricter categories. ill mark brainliest

Which statement best summarizes the process of the abolition of slavery in the united states? o a slave owners agreed to limit and ultimately abolish slavery to prevent a slave rebellion similar to the haitian revolution o b. the united states did not abolish slavery until after many latin american countries did because it faced opposition from powerful slaveholders o c. the abolition movement in the united states used a series of legal challenges to successfully outlaw slavery. d. the abolition movement used nonviolent tactics to eventually convince the u. s. government to abolish slavery.

Which of the following was probably the most difficult challenge facing construction of the railroad?