How did the concept of citizenship change in 1868 ?

One specific historical event or development during the period 1786-1861?

Match each treaty with its description. treatys- a the munich agreement b the pact of steel c the molotov-ribbentrop pact descriptions- 1- an alliance between germany and italy 2- an agreement between germany and the soviets dividing eastern europe 3-an agreement between germany, france, italy, and britain granting germany a small part of czechoslovakia in return for peace

What has been a long term effect on the panama canal