Why did Islam initially expand by conquest? Can you distinguish between the expansion of Arab power and the spread of Islam?

Gettysburg address question. what is the purpose of this address?

The platt amendment of 1901 forbade cuba from entering into any treaties that would allow undue foreign involvement in cuban affairs. this law was passed after the spanish-american war to make sure that european nations weren’t going to get involved with cuba. 1, why might the platt amendment be considered ironic? 2, what reasons would the united states have for not wanting european influence in cuba?

Anode is a point on a wave where there is no vibration. a.true b.false