Answer:
A or D or both
Explanation:
It says, "Nationalism is a strong feeling of support for one's nation. The support can mean to be proud of one's country and to want it to be the richest and most important country in the world. Nationalism caused many problems among European countries in the years before World War I", so it is logic that the Europeans were afraid that other countries would gain more power if they lost and of course they want to super powerful.
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<span>The largest interest group in the United States, by membership, is the American Association of Retired Persons (AARP). This group has about 37 million members. Membership is increasing due to the vast amount of the baby boomer generation turning 65 years old.</span>
A president vetoing law in an example of the CHECKS AND BALANCES principal of the constitution.