Which technological advancement from classical Greece is still used today?

Why do the soldiers board the grounded boat

What initiatives were taken by americans to benefit the war effort? 1. americans planted home gardens to ration food for the troops. 2.american charities were established to provide aid to factory workers. 3.american companies joined together to make products more cheaply. 4.americans created clubs for promoting weapons to be used in the war.

Where did zebulon pike spend most of his time exploring?