Que Piensas de los puertorriqueños que viven en los estados Unidos?​

Identify the type of chemical reaction involved in each action.

In 1933 the 21st amendment was added to the u. s. constitution, allowing for the manfacture, transportation, and sale of alacoholic beverages in the united states. why was this amendment needed?

How did the movement of soldiers during world war 1 contribute to the global influenza (flu) pandemic of 1918 to 1919, which killed millions of people