Which two governments would share the characteristic of being ruled by a single leader?

An absolute monarchy and an autocracy.

In absolute monarchy, the king is the ultimate ruler. King holds the supreme authority just like in ancient times. The roman empire, the greek empire are a few examples of absolute monarchy. Whereas in Autocracy means rule by the self, meaning the system of government by one person with absolute power.

So, these are the two governments would share the characteristic of being ruled by a single leader.

Give Brainliest if you please |:P

the best and most correct answer among the choices provided by the question is the second choice "less supportive to the war of 1812"

the war of 1812 was a military conflict that lasted from june 1812 to february 1815, fought between the united states of america and the united kingdom, its north american colonies, and its native american allies.

i hope my answer has come to your . god bless and have a nice day ahead!