The right choice to your question is A. a chemist who created vaccines against Cholera, rabies and anthrax. ~~~ Check the meaning of Pasteurization.
The United States presidential election of 1800 was the fourth quadrennial presidential election. It was held from Friday, October 31 to Wednesday, December 3, 1800. In what is sometimes referred to as the "Revolution of 1800", Vice President Thomas Jefferson<span> defeated President </span>John Adams<span>.</span>
The absolute necessity of an international organization for settling disputes between countries was real, but also, it became evident that an organization of that kind would be powerless and useless unless the United States took part in it.
In February 1915, Germany announced unrestricted warfare against all ships, neutral or otherwise, that entered the war zone around Britain. One month later, Germany announced that a German cruiser had sunk the William P. Frye, a private American vessel that was transporting grain to England when it disappeared.