The Norman conquest of England, led by William the Conqueror (r. 1066-1087 CE) was achieved over a five-year period from 1066 CE to 1071 CE. Hard-fought battles, castle building, land redistribution, and scorched earth tactics ensured that the Normans were here to stay. The conquest saw the Norman elite replace that of the Anglo-Saxons and take over the country’s lands, the Church was restructured, a new architecture was introduced in the form of motte and bailey castles and Romanesque cathedrals, feudalism became much more widespread, and the English language absorbed thousands of new French words, amongst a host of many other lasting changes which all combine to make the Norman invasion a momentous watershed in English history.
B: The Federal Government needs to respond quickly.
Congress needs to go through a long and careful process to get things done, not to mention them needing to have the majority of congress agree.
The president/executive branch of the government is made up of much less people, as well as the president himself being commander and chief of the military.
Time is very important during a national emergency, and the president can get things done quickly.
Hope this helps.
Champlain led them to New France. :)
The uprising that resulted in the creation of repressive laws that restricted enslaved people would be The Slave rebellion led by Nat Turner in August 1831 I believe