<span>In the year 1784, Thomas Jefferson (third president of the United States of America) directed in the state of Virginia, USA the first ever controlled excavation of an olden burial mound. This is known to be the first scientific archaeological excavation in history. </span>
Answer:
answer would be a. if im not mistaken
Explanation:
I'm pretty sure the answer is ( a terminal moraines )
Cahokia was one of the largest and possibly the capital city of the people that are referred to as the Mound Builders. Cahokia's size and the large number of people that lived there led to the main issues. Bad droughts and poor harvests meant people couldn't eat.
<span>Reporting on military setbacks contributed to public disillusionment with the war. (qizizz.com)</span>