This would be the 14th amendment.
Pass a law requiring parties to hold a direct primary.
Answer:
lots of countries
austria hungary
germany
russia
uk france
etc
reason: assasination of archduke franz ferdinand
who won: allies
Explanation:
Causes<span> include controversy over admitting Missouri as a slave state in 1820, the acquisition of Texas as a slave state in 1845 and the status of slavery in western territories won as a result of the Mexican–American </span>War<span> and the resulting Compromise of 1850.
Hope this Helped :)</span>