For resources and to prove that they were powerful. Their initial holdings before WW2 were not enough to fuel the war machine it wanted to become.
Answer:
Because Vikings are portrayed as messy and violent
Explanation:
In reality Vikings were the first to start bathing on a regular basis and it is true that they were powerful in combat but they didn't really go into combat much more than most European Kingdoms during that time.
Colonialism is the answer
Patrick Henry supported the war with his inspiring speech.
I hope this helped!