Maya observed the sky and calendars to predict solar and lunar eclipses, the cycles of the planet Venus, and the movements of the constellations.
Serbia supplied the rebels with weapons so that they could kill the archduke. Austria-Hungary declared war on Serbia. Russia entered to defend Serbia because they both had large Slavic populations. Germany entered to defend Austria-Hungary. Alliances drew other countries in until it was a world war.
Answer: True
Explanation:
So many countries were allied or opposed to one another that no one expected that there would be a war, especially the one with the horrific consequences of world war one.
Answer: the correct answer is b
Explanation: