Answer:
World War I popularized the use of the machine gun—capable of bringing down row after row of soldiers from a distance on the battlefield. This weapon, along with barbed wire and mines, made movement across open land both difficult and dangerous. so trench warfare was born
Explanation:
The answer is letter C and B. Puerto Rican citizens do not vote for the president. They are US unincorporated territory and they are considered American citizens and are using the US Dollar as currency. Just like Guam, they can freely move to any any another place in the US.
In the 1962 book Silent Spring, Carson wrote how pesticides killed everything and should be called biocides because of that. Even though she had her worries about acute pesticide poisoning, she was really alarmed about slow pesticide poisoning of everything, like humans and plants. Her intentions on the book were to educate people about pesticide risks, trying to transform the "myth" of pesticides into reality for the masses.
Answer:
South Sudan should be a country full of hope eight years after gaining independence. Instead, it's now in the grip of a massive humanitarian crisis. Political conflict, compounded by economic woes and drought, has caused massive displacement, raging violence and dire food shortages
