Answer:
The Louisiana Purchase, made 200 years ago this month, nearly doubled the size of the United States. ...
All or parts of 15 Western states would eventually be carved from its nearly 830,000 square miles, which stretched from the Gulf of Mexico to Canada, and from the Mississippi River to the Rocky Mountains.
A sharp decline in President Johnson's popularity.
To experiment the force of gravity between masses
Because they had a strong military and they built roads to move their armies to where they were needed
