President Barack Obama visited Cuba this weekend to talk to leader Raul Castro. This was the first time a U.S. president had been to Cuba since Calvin Coolidge’s visit in 1928. The relationship between the two countries has been strained ever since Cuba’s 1959 revolution, with much of the tension centered on a ban on trade between the countries that has lasted for 54 years. But now this tension seems to be easing. Government relationships between the countries were restored last year, and President Obama’s visit has many people hoping for more steps toward peace.