Central America is a land bridge that connects North and South America. What is another way to say land bridge? NEED HELP ASAP!

a.Isthmus
b.archipelago
c.peninsula
d.plateau

What is a benefit for European countries to join the European Union?

a.People can work easily in other European Union countries
b.People must exchange their money going from one country to another
c.People must go through customs when entering a European Union country
d.There are high tariffs on goods from other European Union countries