A Senator's term of office is six years and approximately one-third of the total membership of the Senate is elected every two years.
Answer:
The invention of the printing press by Johannes Gutenberg.
Explanation:
The invention of the printing press by Johannes Gutenberg allowed new ideas to spread more quickly around Europe. The discovery of America by Columbus meant that new foods and medicines were brought back from the New World.
I think it the Boston tea party. But if iam wrong Iam so sorry look it up on google that may help
C) Heinrich "discovered" the ancient city of Troy in 1870.