When did Puerto Rico become a commonwealth?

When did Puerto Rico become a commonwealth?

Puerto Rico has been a U.S. possession since 1898. It became a commonwealth in 1952. Puerto Rican citizens became U.S. citizens in 1917.

How many songs did Mozart write?

Music in three stages: early 1761-1772 middle 1772-1781 late 1781-1791 best known works Mozart composed over 600 works including: 21 stage and opera works, 15 Masses, over 50 symphonies, 25 piano concertos, 12 violin concertos, 27 concert arias, 17 piano sonatas, 26 string quartets, and many other pieces.

What element has the largest atomic mass?

It is also known as eka-radon or element 118, and on the periodic table of the elements it is a p-block element and the last one of the 7th period. Ununoctium is currently the only synthetic member of group 18. It has the highest atomic number and highest atomic mass of all the elements discovered so far.

What year was super glue invented?

Today I found out Super Glue was invented by accident, twice. Super Glue, also known as cyanoacrylate, was originally discovered in 1942 by Dr. Harry Coover, who by the way died last month on March 26th, 2011. Coover was attempting to make clear plastic gun sights to be put on guns used by Allied soldiers in WWII.

What does Shemp mean?

Fake Shemp or simply Shemp, is the term for someone who appears in a film as a replacement for another actor or person. Their appearance is disguised using methods such as heavy make-up, filming from the back, or perhaps only showing an arm or a foot.

How do you get decaf beans?

The general decaffeination processes includes soaking the still green coffee beans in hot water (160-210 degrees Fahrenheit) and then some sort of solvent or activated carbon is used to extract/dissolve the caffeine. The solvents typically used are methylene chloride or ethyl acetate.

Are all breeds of dogs color blind?

No, dogs are not colorblind in the sense that they see more than just black, white, and gray. However, the color range they perceive is limited compared to the spectrum we see. To put it in very basic terms, the canine color field consists mostly of yellows, blues, and violets.

Which US president had a PHD?

Woodrow Wilson. Thomas Woodrow Wilson (December 28, 1856 – February 3, 1924) was the 28th President of the United States from 1913 to 1921 and leader of the Progressive Movement. To date the only U.S. President to have held a Ph.D., he served as President of Princeton University from 1902 to 1910.