1898- United States bomb and invade Puerto Rico during the hispanoamericna war.
1899- The military government of General Miles(Piel de Oso)declares the american dollar as the only legal and unique money,the change was 60 cents per peso,with that they stole to the puerto rican people a 40% of national treasure.
1917- The United States congress give,by law jones,the american citizenship to puerto rican agains there own will,just 3 weeks after USA enter into world war 1 and declare obligatory military service.With that they send puerto ricans to fight in to every USA war.
1931- DR.Cornelius Rhoads,doctor of Harvard and member of a program that investigate anemia experiment with puerto rican workers and their families inyecting cancer on them.
1935- Governor Blanton Winship and the chief of police Elisha Francis riggs, both americans,plan and execute the killing of puerto rican nationalist party liders.
1936- An USA government conspirasy to intimidate Puerto rican nation by killings and terror is proven.They kill 2 nationalist in police quarters accused of the assasination of the chief of police Riggs.
1937- What is known as the Ponce massacre,the police,executing orders of american governor Blanton Winship,kill 21 persons and injure more than 200 in the city of Ponce.
1944- A process of esterilization start by force agains puerto ricans womans to control natality that lead a third part of woman population sterile during their fertile age.
1950- The US army experiment with bacterias that later they use in Korea.
1951- The US marines establish an office of naval investigation in the University of Puerto Rico to experiment with the radiation of cosmics rays.
1953- Experiment with radiation were realize in imprisoned humans and politic prisoners.
1956- US companies start experiments with contraceptive pills in Puerto Rico.
1961- From 1961 to 1966 the pentagon experiment with agent orange and white and others that were used in Vietnam.
1965- From 1965 to 1967 experiments with nuclear radiation were realize in differents areas of "El Yunque" to determine the effects of those rays in animal and plants life.
