Answer
4 and 5
Explanation
A constant term in an expression is a term that does is independent of any variables. This means that constant term will have non of the variables 
attached to them. In the expression 
we notice that the terms integers 4 and 5 are the only terms that are not coefficients of any of the variables in the expression.
I am not 100% on this so you may want to fact check my response:
Lusitana - it was torpeded by German U-Boats and it sank in 18 minuntes... i also believe it was a passenger ship which also really upset the US
submarine- new
The Missouri Compromise, which preserved the balance between Free and Slave states.
Laws were needed to justify the need for order in the rising complexity of the civilization so as more laws were written more were enforced and more were needed to justify that enforcement
A federal judge ruled about Japanese relocation 40 years after the fact, in 1986, that it was overall an unconstitutional action on part of the Roosevelt Administration.
