The important advancement that was made by the Maya was the astrolabe. They used a 260 day calendar. The correct answer is D.
Spain, France, United States
I’m pretty sure it’s about 85%
June 25, 1950<span>On June 25, 1950, the Korean War began when some 75,000 soldiers from the North Korean People's Army poured across the 38th parallel, the boundary between the Soviet-backed Democratic People's Republic of Korea to the north and the pro-Western Republic of Korea to the south.</span>
