Answer:
Because it is useful to society
Explanation:
please give me your choices. I can't help if you don't give me choices.
"<span>the assassination of Archduke Franz Ferdinand" is thought to be the spark that lit the powder-keg </span>of war at the beginning of the 20th century. A dense web of alliances was set off from this shooting.
Here's link to the answer:
tinyurl.com/wtjfavyw
Too much stock speculation and overproduction in industry and agriculture.