When the pilgrims travel to the us what all did they half to do

They ?half? to do hmmm unsure

First of all they had to build the ships, and make sure there was enough room for the people and animals they had to bring along. They had to make sure that they were bringing enough food and water, to last them the whole trip. They had to calculate how far they were going to travel, and how long it was going to take to get them there. 
You should add in your answer that the reason that they were traveling to the US in the first place was to have religious freedom