B. It was to aid Europe after WWII
Answer: Four geological ages.
Explanation:
he development of the country is divided into four geological ages, prehistoric or Precambrian, ancient or Palaeozoic, Middle Ages Mesozoic, and New Age Cenozoic.
- The Precambrian period begins after the formation of the Earth's crust and lasts about 4 billion years, and it is the oldest and most extended period of Earth's history.
- The beginning of the old age was marked by intense volcanic activity and the Ice Age.
- The Middle Ages were the period of the dinosaurs who were the dominant beings of that period.
- The new age, or the age of mammals, begins with the change of the warm and cold periods and continues to this day.
I would have to go with Completion of the transcontinental railroad in 1869
I believe the answer is A, Pollution of the environment, hope this helps :)
