Here you will find links to websites about history that are suitable for English language learners.
This Simple English Wikipedia page has links to information about all the most important empires and time periods in world history.
This page from Biography online has a list of links to the top 100 famous people, who in its own words were "...chosen mainly from the nineteenth, twentieth or twenty-first centuries. The list includes famous actors, politicians, entrepreneurs, writers, artists and humanitarians".
By contrast this Biography online list has links to information about the people who are considered The list is based on a book by Michael H. Hart. to have most influenced world history.