Portuguese colonization in the 1400s inaugurated an era of aggressive European expansion across the Atlantic. The Spanish, threatened by the Portuguese monopoly on enslaved Africans and expansion in the Atlantic, started their own colonization project with Christopher Columbus in 1492
World War I still costs taxpayers $20 million a year, World War II $5 billion and the Korean War $2.8 billion. The total cost of the Vietnam War, estimated to be more than $1 trillion in current dollars, includes $270 billion paid out in benefits.
I have done some research and went off of what I knew, but I am going to say the answer is B. Its the only one that makes the most sense.
Answer:
C. the increasing popularity of rock and roll music
