Is this geometry? if so is there a picture i can look at to help you?
Answer:
Smallpox has had a major impact on world history, not least because indigenous populations of regions where smallpox was non-native, such as the Americas and Australia, were rapidly decimated and weakened by smallpox. During the 18th century the disease killed an estimated 400,000 Europeans each year, including five reigning monarchs, and was responsible for a third of all blindness. After successful vaccination campaigns throughout the 19th and 20th centuries, the WHO certified the global eradication of smallpox in December 1979. Smallpox is one of two infectious diseases to have been eradicated.
Explanation:
Hope this helps!!!
Its affects it because it is salt water
Timelines show historical events or periods because they can happen years or decades ago and that means historical.The purpose of a historical map is to describe or show important travels, rides, or routes that famous people in history took.Who is the author?
Can you find the authority or credentials of the publisher?
What if there is no author for an internet source?