Answer:
Manhattan Project National Historical Park
I think the answer is A or B. Sorry if the answer is wrong.
<span>The most important advancement that was made by the Maya was B. the 365 day calendar.
This calendar has survived hundreds of years and is still used today. The Maya's were also the ones who developed the concept of the number zero, they predicted the lunar eclipses, and also tracked the cycles of the moon, planets, and stars. The Mayans used this technology they developed to plan for proper harvesting and crop rotations.</span>
<span>He followed the Powell doctrine and wisely stopped at the border with Kuwait. His son picked up what he perceived to be the saber dropped by his father, and look where it landed us. To avoid long-term involvement in Iraq. </span><span />