One thing Belfast and Cork City have in common: *
(one word only)

They are in the same country of Ireland.

Ireland?

Explanation:

Belfast is in Northern Ireland, while Cork City is in the Republic of Ireland, which is in Ireland of course.

Otherwise, I doubt there is any more simple and common similarities.

Titanic

Explanation:

The Titanic had a stop at Belfast (I think-) and the Titanic's last stop before they hit the iceberg was Cork City.

increases in demand are shown by a shift to the right in the demand curve. this could be caused by a number of factors, including a rise in income, a rise in the price of a substitute or a fall in the price of a complement.

which the answer is:

b

in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

explanation: