Answer: 2nd and 4th options.
Explanation:
I would think that's true. Having the means to create more products would lead to an increase in trade, assuming the products are not meant solely for domestic use.
Answer:
2 used the wind to travel to North America
Austria-Hungary had invaded and crossed over into, Serbia and Russia was in an alliance with Serbia, so they felt as though they had to help out. Hope this helps.
