It is false that under the Treaty of Paris, Spain was to cede Canada and all its claims east of the Mississippi River to Paris.
Step-by-step explanation:
The treaty of Paris was a treaty in the year 1763, which ended the war between countries namely France, Britain and Spain which was going on for the period of seven years where Spain received Louisiana territory of the west of the Mississippi river and the port of New Orleans. The east of the Mississippi river was not given to Paris but was given to Britain under this treaty.