The cotton gin made it easy for slaves to separate seeds out of the cotton. However, it it increased slave usage all over. It actually increased the use of slavery. The cotton gin just made one part of a slaves job quicker and easier.
The answer is C, the US successfully tested an atomic bomb.
The correct answer would be A. Communists
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.
