1-Henry V
2-Agincourt
3-New Zealand (Weird reason but they did declare war first)
4-Fall at the same rate
5-Roman short Sword
6-Samuel Clemens
7-Lenin, Stalin, Kruschev, Brezhnev, Gorbachev.
8-1666
9-desert fox
10-1/2Dπ
You're wrong on four. The feathers would have a much, much larger surface area as it would take a huge amount to make weight, therefore would have more drag and fall a little bit slower.