Which statement best explains why the mayans of central america, whose civilization flourished between 400 a. d and 900 a. d., created a more accurate calendar than their contemporaries in scandinavia

these conditions long with a short growing season made farming difficult.

explanation:

the north has a climate of warm summers and snowy cold winters. the terrain is rocky, hilly, and not good for farming.

might be agreeing to participate ethically with other european nations in the slave trade

or notifying other european nations when taking possession   of african territories

new evidence is discovered.

oversights and errors are corrected,

new technology is applied to evidence.

i think the answer is the one about environmental and social health.

hope this