Why was the Mayan calendar such an important thing?

The Mayan Calendar determines dates by its position in both the Tzolkin and the Haab calendars.” Together, this creates “18,980 unique date combinations, they use this to identify each day within a cycle lasting about 52 years. A Calendar Round is the completion of each cycle period.

Explanation:

The 260-day calendar was used to adjudge, really  important activities related to the gods and humans. It was used to name people , predict the future, decide on auspicious dates for battles, marriages, and so on.

nuclear fission produces the atomic bomb, a weapon of mass destruction that uses power released by the splitting of atomic nuclei the fighting in iwo jima and okinawa affected the allies' pacific strategy because truman decided to drop the atomic bomb on mainland japan.

answer is 1935

because gandhi led a march the sea in 1930 and 5 years later he did it again