The goal of containment (Truman Doctrine) was to box in the Soviet Union to prevent them from effectively spread communism.
Women vote around 1917 in New York. Some states had the right to vote before the 19th Amendment. Carrie Chapman Catt and suffragettes had convinced President Woodrow Wilson and other political leaders that women had the right to vote. ... The Nineteenth Amendment was signed on August 26, 1920.
I believe it was the division of Byzantium and the Latin West. Byzantium was the emperor of Constantinople the area around Greece and Turkey and North into Russia. Latin West was under the control of different people until dominance of the Franks in the region. Another powerful and well noted authority was the Pope. Basically...there was a the decline of Rome and different views on the Christian doctrine. (Q_Q ) That's the best way I can word it.
The decay equation is of the form

where
m(t) = the mass remaining after t minutes
m₀ = the initial mass
k = constant
Because the half-life is 3 minutes, therefore

Therefore
-3k = ln(0.5)
k = ln(0.5)/(-3) = 0.231
Because m₀ = 16 mg, the time, t, for the mass to decay to 1.0 mg is given by

Answer: 22 min (nearest integer)