The U.S. Constitution and state constitutions allow for amendments. ... Most of them follow the form of the U.S. Constitution closely, leading to similarities between the documents .
<span>It opened the door to almost unlimited immigration.</span>
Answer: The Cambrian Period
Explanation:
The part of the ocean or sea that cuts far into the adjacent land mass is often referred to as a "shelf" or "plateau", since it is simply an extension of the land mass that makes up the area above the water.
