Battle of Shiloh and Battle of Gettysburg
The ice age melted a straight which turned it into a sea which helped them migrate.
With the coming about of the tradition<span> of Sufism, </span>Islamic missionary <span>activities increased drastically. I believe is A.</span>
The ratification of the U.S Constitution is the correct answer.
Even though the 'Articles of Confederation and Perpetual Union' had been submitted for ratification in 1777, it wasn't until 1781 that a significant number of states approved it. The ratification of the U.S constitution was a very important event in the midst of the economic depression that the United States was going through.
