Germany and Soviet Union
(They did not declare war on the Soviet Union though)
The correct answer to this open question is the following.
You forgot to include the options for this question. However, we can say the following.
Some Romans believed that an empire would better serve Rome’s needs than a Republic because "The emperor could make decisions quickly without our having to convince others."
When the Roman Republic was established in 509 BCE, the system was based on democracy and the creation of rules to serve the people. The Senate was an important institution for the Roman Republic and the Roman law influenced other legislations until the modern-day era. However, the desire for control, power, and greed, changed things in Rome and the Emperor dropped the democratic system and created absolutists and centralized system in which only the Emperor was the one who imposed his will over the entire Empire.
D or C us a hard question
A. The division of government into three branches
A. The Republican party formed after the Kansas - Nebraska Act