Name three major ways that John Adams served our country during his lifetime

In the 1780s, Adams served as a diplomat in Europe and helped negotiate the Treaty of Paris (1783), which officially ended the American Revolutionary War (1775-83). From 1789 to 1797, Adams was America's first vice president. He then served a term as the nation's second president.

Explanation:

John Adam ended the American Revolutionary war with the the treaty of Paris which marks peace. Becoming the first vice president shows that John Adams was second in command and helping leaders.

the answer is b.

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a. by accepting the election of president abraham lincoln in 1860 and convincing other southern states to do the same