The building of temples and great cities without modern machinery, using astronomy to predict astrological cycles and plant crops and using their language to communicate and measure time are some of the Mayans most notable achievements.<span> During a 600-year period of time, which was from 300 A.D. until 900 A.D., the Mayans made many great achievements in science, communications, engineering and agriculture.</span>
Slavery ended in the United States of America after the civil war because the Union won the war which has the opinion to end slavery.
<h3>How did slavery affect the USA after the civil war?</h3>
Due to Union victory in the Civil War, about four million slaves were freed. The U.S government granted citizenship to African Americans and the right to vote in the election.
So we can conclude that Slavery ended in the United States of America after the civil war because the Union won the war which has the opinion to end slavery.
Learn more about slavery here: brainly.com/question/9374853
#SPJ1
Explanation:
in the early 1800s, asylums were an institution where the mentally ill were held.
#2 In all, the Japanese attack on Pearl Harbor crippled or destroyed nearly 20 American ships and more than 300 airplanes. Dry docks and airfields were likewise destroyed. Most important, 2,403 sailors, soldiers and civilians were killed and about 1,000 people were wounded.
