My guess is b. Muhammad tughluq...... Sorry if it's wrong but I really think it is b.
President Harry S. Truman was the 33rd
president of the United States, taking the office after late Franklin D, Roosevelt.
Truman assumed the presidency during the Second World War and gave an order to
drop the first atomic bomb attack. After it appeared that Japan won’t
capitulate, Truman ordered first atomic attack on Hiroshima (August 6th
in 1945) and the second on Nagasaki (August 9th in 1945) resulting
in 214.000 people dying.
The treaty added an additional 525,000 square miles to United States territory, including the land that makes up all or parts of present-day Arizona, California, Colorado, Nevada, New Mexico, Utah and Wyoming. Mexico also gave up all claims to Texas and recognized the Rio Grande as America's southern boundary.
If you are talking about government, then the system is called Monarchy
