One way a quadcopter is used today is to capture important events from above if you need a certain angle. Another way is to surveil areas,
Answer:
The most popular versions were printed in small sizes that could be easily carried and were bound in bright red covers, becoming commonly known internationally as the Little Red Book.
Explanation:
Correct answer choice is:
B. Machine guns.
The machine gun, that therefore came to intimidate and even to encapsulate the battlefields of warfare One, was a reasonably primitive device once the general war began in August 1914. Machine guns of all armies were for the most part of the significant selection and unquestionably ill-suited to immovability to be used by speedily advancing army unit troops.
