Answer:
Power passed from kings to local lords, giving rise to a system known as feudalism. Under feudalism, landowning nobles governed and protected the people in exchange for services such as fighting in a noble's army or farming the land.
Because many other people spoke different languages then others which was hard.
The power to print money and start a treaty with a foreign government cannot be caries out at a state government level but can be carried out at a national level.
