During the Industrial Revolution, Louis Pasteur established that most diseases are caused by germs and developed a way to kill them (C).
Louis Pasteur was a French biologist that made discoveries about vaccinations, microbial fermentation, and pasteurization (named after him). He is known as one of the fathers of the germ theory and his discoveries have saved many lives.
U.S President James Polk offered to buy California and New Mexico before the mexican american war, but his offered was rejected by the Mexican government.
The constant German sinking of trading vessels that they had made an agreement with the U.S. to stop, but broke, along with other factors such as yellow journalism and the Delome Letter.
<span>. The Nile, Western and Eastern Deserts, and the Mediterranean Sea
(I think)
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