How did the european union’s new common market change life for workers?
a.) workers could move freely between nations.
b.) many workers unionized and demanded benefits.
c.) most workers earned more competitive wages.
d.) workers could share jobs and work fewer hours.

The European Union is a politico-economic union of 28 member states that are located primarily in Europe. It has an area of 4,324,782 km², and an estimated population of over 510 million. 

The correct answer between all the choices given is the first choice or letter A. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

The first alternative is correct (A).

The European Union consists of an economic bloc aimed at integrating European economies. The countries adopted the same currency and a common Central Bank. In this sense, citizens of the bloc were able to move freely among member countries, including in relation to jobs. The bureaucracy for a citizen of one country block to work in another block country has decreased.

the correct answer option is: weapons.

explanation:

tensions rose as the two opposing superpowers competed for 'weapons'.

referring to the cold war (1945-1991), the two superpowers, usa and ussr, experienced a phase of struggle and conflict with each other. these two superpowers considered each other as a threat to their survival and thus opted for policies to strengthen their positions.

the two superpowers never went to war with each other directly but competed for weapons to preserve their positions.