43 P of A

43 presidents of America (Grover Cleveland was the 22nd and 24th, so he gets two hits)-- suppose I should have shown it as:

43 P of US, but that would given it away immediately

1776 M of D

1776 miles of Danube

Here are some easy ones:

9 P of SS
12 P of CS
32 O in Q
1 M of E
7 S in BD