The president has traveled out of the country in order to talk to germany about export and import agreements. this is known as

Diplomatic relations, is the right answer.

Explanation:

Diplomatic relation is a term used to refer to the conventional diplomatic dealings between countries. It includes perpetual connection and interaction between sovereign nations. Two nations send diplomats to serve in each other’s nation and to bargain with each other formally, as a part of the diplomatic relations. Diplomacy is the chief tool of foreign policy, which comprises the more extensive intentions and policies that lead a state's cooperations with the other world.

four sitting presidents have been assassinated while in office but the first was abraham lincoln,