Sienna shift her position on the gymnasium floor because her skin and the gymnasium floor reached thermal equilibrium.
When they traveled, they carried cheap luggage, which were called carpetbags. They were mass produced during this time (reconstruction era) and therefore, the many people coming down with them from the north were referred to derisively as carpetbaggers.
Algeria was a French colony back in the day, so obviously no colonial country would want any of its colonies to gain independence. Just take a look at Britain and America - America consisted mostly of colonists from England who then decided they wanted freedom to become a separate country. Algeria used to belong to France, which means that all of its resources and money also belonged to France, which is something it didn't want to lose.