Answer:
a form of monarchy in which the monarch holds supreme autocratic authority, principally not being restricted by written laws, legislature, or customs.
Explanation:
a form of government in which the ruler is an absolute dictator
From the picture I believe it is Germany
These are the formal ways...
1) Get 2/3rds majority vote in both houses of Congress to propose a Constitutional amendment and a 3/4ths vote of the State Legislature to ratify the amendment.
2) Call a Constitutional convention by 2/3rds of the state legislatures with a 3/4ths vote to ratify the amendment.