(1) passage of the fugitive slave law
Since you provide no options,
The event that marked the unification of spain was the marriage of Ferdinand of Aragon and Isabella of Castille in 1496.
their marriage set the stage for the Creation of the Kingdom of Spain
hope this helps
American revolution Create new trading relationships. It also change mostly politics, socially, and economically to be better
Checks and Balances are all spread through out the branches. Each one is designed so no one branch became to powerful, each branch has to check and balance another one.
