What is the difference between altruism, nationalism and patriotism?

Question

I need the answers for my homework. Examples will be really helpful. Thanks in advance. :)

God bless you guys. :)

Answer 1

The word altruism means; the principle or practice of unselfish concern for or devotion to the welfare of others.  Nationalism is national spirit or aspirations of one countries spirit of being a nation, while patriotism is devoted love, support, and defense of one's country; and national loyalty.

Answer 2

Altruism is me liking to help others.

Nationalism is me putting my country first, before others.

Patriotism is me esteeming my country highly.

Answer 3

ALTRUISM IS SELF-SACRIFICE FOR ANOTHER'S GAIN.

NATIONALISM IS SELF-DETERMINATION OF A GROUP OF PEOPLE WITH LAND, GOVERNMENT AND COMMON INTERESTS

PATRIOTISM IS A WARM FERVOR FOR ONE'S HOMELAND