The French explorer arrived in north America for several reasons which included spreading of the Christianity to the Northern lands as North America was known then, Acquiring riches and also in a quest to discover trade routes on the waterways that will link North America to Asia for the purpose of trades.
The primary motive was to Acquire new lands/colonies for the French as other European countries have acquired colonies for themselves in North - America and other parts of the world.
They can be if the person is taking in too many calories. It is really the sodium and sugar that is the problem. A family history of hypertension also contributes to increase incidence.