in each paragraph talk about both countries
That means it is the kind of compare contrast essay called "opposing."
Google this for a good explanation:
Compare and contrast essay opposing
do I have to keep write the united state or its fine to write united state???
You can write "the U.S." or "the United States."
Remember to write about both the similarities and differences in each paragraph.
Culture differences and similarities between Palestine and the United States are easily seen in their holidays, foods, and customs.
Good This is going to have good organization. But remember that compare and contrast mean similarities AND differences.