Which statement describes an effect of the Louisiana Purchase (1803)? 1
The size of the United States was doubled.
2
The boundary with Mexico was finally established.
3
The Northwest Territory became part of the United States.
The Mississippi River became the western boundary of the United States.

chlorofluorocarbons are released via: aerosol sprays and refrigerants.

-an amendment is proposed.

-two-thirds of congress must approve.

-thee-quarters of states must approve.

-the proposed amendment becomes law.

hope this

answer; people where able to travel across the u.s.a faster than any other mode of transportation,travel time was about a week,from coast to coast

254.34

step-by-step explanation:

the formula for area of a circle is given by

a = pi * r^2

a = pi * 9^2

a = 81*pi

using 3.14 as an approximation for pi

a = 3.14*81

a = 254.34