To make sure you were safe
The navigational compass because it’s obvious
Answer:
I think the answers are
A. A state can keep ships of war in time of peace.
D. A state can enter into any agreement with a foreign power
B. A state can engage in war
Explanation:
I hope this helps!
B is debatable because A state can't engage in a war without the consent of congress unless it is being invaded or in danger.
<u>Machine Guns</u> because tanks and poison gas weapons had not been created yet until i think WW1
