How did Great Britain and the United States benefit from the independence of Spain’s American colonies

How did the united states surprise other delegates at the washington naval conference in 1921

The holocaust of world war ii resulted in a) the nazis effectively used propaganda to gain and hold power in germany. b) ethnic regimes carried out mass devastation. c) deporting all european jews to the island of madagascar. d) the systematic mass slaughter of european jews and and others in nazi concentration camps during world war ii.

How have a past president and our current president abused the powers granted to the president of the united states by the constitution and the people ?