Answer:
In my opinion the most important amendment passed during this time was the 19th amendment because it gave every citizen no matter their sex, the right to vote. Another reason I believe this amendment was important is that it seemed to specifically target women's right to vote, since white and black men could already vote at the time, and this amendment is important to our politics today.
The least important of these amendments was the 18th amendment because it prohibited the sale of intoxicating liquors. This amendment also contributed to more problems such as the establishment of speakeasies and encouraged smuggling.
Explanation:
The 16th amendment gives Congress the power to lay and collect income taxes.
The 17th amendment states the qualifications, term limits, and number of Senators each state gets (which is 2 per state). The term is 6 years, and each Senator has one vote.
The 18th amendment bans intoxicating liquor. This was during the prohibition days. However, the amendment has been overturned in recent times (of course).
The 19th amendments gives every citizen the right to vote, not matter their sex/gender.
The 20th amendment outlines the end of a President/Vice President's and Senators/Representatives' term. It also states how often Congress meet.