Answer:
A-Congress had to pass legislation making it possible to amend the Constitution.
I would say the US articles of Confederation may have provided for a weak central government and these were replaced to provide for a strong federal government and perhaps this was when the original confederation was changed to a federation where the states relation to the federal government was no longer voluntary.
Answer:
Agustin de Iturbide was a Mexican revolutionist and leader of the conservative faction of the Mexican independence movement who briefly served as the Emperor of Mexico. Iturbide commenced his career as the officer of the royalist army.