Do the dates on this map suggest an invasion of people or a migration of people

Invasions of people--many of the groups came as military and fought the Romans as invading forces.

americans had many intangible advantages. well since the british fought a war far from home military orders, troops, and supplies sometimes took months to reach their destinations, and the british had an extremely difficult objective. they had to persuade the americans to give up their claims of independence, americans had a grand cause: fighting for their rights, their independence and their liberty. this cause is much more just than waging a war to deny independence.

whose power in the senate is equal to the power of the speaker of the house?