I would say answer B
b. The United States can demonstrate its global leadership
<span>The harsh conditions created by the industrial revolution gave rise to "labor unions," since these unions were intended to protect the rights of workers by allowing them to "bargain collectively". </span>
Duty-free allowances
No more than 200 cigarettes and 20 cigars per person. No more than 250g of cigarette or pipe tobacco per person. No more than 50ml perfume and 250ml eau de toilette per person. No more than 2 litres of wine per person.