Why did europeans need new trade routes in the second half of the 15th century

In 1990s the us closed clark air force and subic bay naval station in

What man proposed a solution to the issue of slavery in the territories suggesting the idea of popular sovereignty

Will mark as brainliest. i need .select the correct boxes. 1. similarity between united states and roman republic. 2. difference between united states and roman republic1. the government had a written constitution. 2. women could vote. 3. there was a system of checks and balances. 4. the government could use a veto to cancel an action.