Answer:
b.
Explanation:
It wouldn't be A because they all aren't scientific discoveries.
It wouldn't be C because barbed wire and windmills do not fall under the communication category.
It wouldn't be D because windmills are not transportation.
BY not accepting the goods from the people who are taxing them
Explanation:
<h3>Aeroplanes and submarines were used for the first time, initially to locate the enemy. The spark that ignited World war I was struck in Sarajevo, bosnio, where archduke Franz Ferdinand–heir to the Austro-Hungarian empire–was shot to death along with his wife.</h3>
Answer:
a tax maybe but I am not sure
