What were some of the achievements of the early civilizations of the americas

The Aztecs created a calendar system. The Shuar/Jivaro tribe is the only group in the world who made shrunken heads. The Mayans discovered the number zero, which they used to measure time. etc.

Explanation:

answer; i believe the answer is (mesopotamia); modern day

explanation:

hitler's  "rise" can be considered to have ended in march 1933, after the reichstag adopted the enabling act of 1933 in that month. president paul von hindenburg had already appointedhitler  as chancellor on 30 january 1933 after a series of parliamentary elections and associated backroom intrigues.