The western european curiosity that led to the colombian exchange originated which explorer travels

According to thomas hobbes concept of the social contract what do people exhange for protection by the government ?

How did inovations in manufacturing lead to improvments in transportation?

Because the texas constitution does not have a "necessary and proper" clause, a government powers are almost unlimited b. much of what is included in the constitution is improper c. the governor has to make the laws d government is limited to what is in the constitution