Answer: It indicates that wagon consisting the letter X is the last wagon of the train. It easily alerts the railway officials so that they can save from the accident.
Explanation:
There are 16 free trade zones in the Dominican republic
the country instituted these free trade zones to boost foreign investment,increase employment opportunities and stimulate economic growth. The free trade zones amount to 32 percent of exports from the country.
Answer:
I can't really help with several of these questions because they are all subjective, but I can answer the first one.
Following World War I, the League of Nations was established to aid in the maintenance of peace and the resolution of international disputes. After WWII, the United Nations was in the same boat. There were also the peace accords that brought the conflicts to a close. (You'll have to evaluate whether these were successful or not.)
21 im not sure tho your welcome.
by polluting water by disposal of industrial effluent to water bodies
