Atsar was a russian leader in the early 1900s who was similar to a

A Tsar was a Russian leader in the early 1900s who was similar to a King.

Tsar is the term for the position of a Russian ruler or the supreme leader of the empire.

Officially developed in 1547 with the coronation of Ivan the Terrible, the Tsardom became the main political force of Russia until its dissolution in 1721.

Nevertheless, the term remained popular and the Russian leaders were still called tsars until 1917, the year in which the empire's power was overthrown by the Russian Revolution.

answer; ///i believe that the correct answer is refrigerants,(like r12) and aerosol

answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;