Since this type of essay is factual in nature, one can never run out of topics. If you have the option of choosing the topic yourself, take the ones that interest you. I wrote the above sample because Italy is one country I would love to visit. Even if the topic is not of your interest, writing an informative essay is all about gathering ideas.
The 20th Century had many important events during those 100 years. Great progress was made during that time for the Civil Rights of all Americans. The two marches demonstrations involving large groups of people: a March on Washington D.C. and a March from Selma to Montgomery Alabama to gain color.