Land was needed to gain power so the need for bigger, stronger ships was needed so that they could be sailed through the rough oceans without being sank to reach land
The president's most fundamental power is the power to persuade. If they didn't have it, they wouldn't be presidents for starters. If they're good at it, they will also persuade the people and the congress to pass pieces of legislature that was created during the term of that president.
The powerful king that united ancient egypt is : Narmer.
Before the reign of narmer, Egypt was divided into lower part and upper part Kingdom. Narmer managed to unified these two kingdoms and became the first king who rule the united ancient egypt
hope this helps
For the second question the one that is incorrect is Choctaw