Answer: 
Explanation:
Given
A Planet is moving at a rate of 3 cm/year
distance between planets is 1500 km
and 1 km=1000 m
1 m=100 cm
No. of years required to cover 1500 km=
Their calendars helped determine the days of their important activities such as religious days, predicting the future, dates of wars and many other things.
Hope that helps :)
Answer:
Step-by-step explanation:
this answer is very complicated
Explanation:
Answer:
never will truly hapoen
Explanation:
to much diversity and different cultural beliefs