I need the correct answer plss

the answer wold be b) travel among nations should be regulated by an international organization

the answer would be:

b. race

the dominoes began to fall. the surrender at appomattox took place a week later on april 9. while it was the most significant surrender to take place during the civil war, gen. robert e. lee, the confederacy's most respected commander, surrendered only his army of northern virginia to union gen. ulysses s. grant

explanation:

the french revolution was when many people were persecuted for disagreeing or making separate government