States demanded the power to regulate trade is best answer why did Congress call for the Constitutional Convention, articles of confederation simply didn't regulated that matter
Answer:
much more crops are produced
The region was home to numerous local conflicts over many years.
Answer:
A. Indian tribes had more area to move into as settlers pushed them
out.
Explanation:
Through the Louisiana Purchase the United States acquired an area more than 828,000 square miles, doubled the size of the United States and opened up the continent to its westward expansion and also provided access to the Mississippi River .
Marie curie - discovered new elements
Louis Pasteur- created vaccines
Gregor Mendel- discovered heredity
Joseph lister - proved the importance of sterilizing medical equipment
George Washington carver- pioneered new agricultural techniques
