Answer:
I'm guessing, activity for the first one?
Explanation:
At the point when Germanic tribes attacked into the Balkans, Gaul, and Spain, the Roman Empire had issues in enrolling enough officers to battle against the burdens from the tribes. In the mid-third century, the state was compelled to utilize Germans from outside the Empire to attack the influx of tribes. The troopers were just willing to work for pay since they didn't recognize Roman cultures or traditions nor did they have any devotion to the Empire.
The answer is money. It was believed that if they found a shorter way to Asia that they could access the trading market more easily and avoid middle-men and things like that. They could open companies there and trade for much less money and earn much more. However, he ended up in the Americas, not India.
This is easy, common denominators. Well you know denominators are at the bottom of a fraction, and you know common means the same, so it would be something like
a d
b = b
