Answer: d.
Explanation: they used them to spy on each other
<span>war: they needed guns and supplies for the soldiers
communication...: people could ask for a certain product
transportation...: get supplies easier for making stuff
mass...: they could make large quantities of stuff faster</span>
we're based on the cycles ok bro
<span>One major creation is that of the Euro. To have a communal currency among all nations is a strong everyday use to be seen in reminding that it is in fact a unity among many nations.
Another would be while English is the number one and the most used official language. The EU has 24 official languages. That is a way for the masses to feel included.</span>
