You just need some inspiration. for the poster draw some women with signs saying things they wanted in the 19th amendment. for the slogan come up with something catchy. maybe like "write us for rights"
The words that would best fit the given blanks in the sentence would be "slave traders" and "raw materials." The American and European colonisers are mainly dependent on the raw materials supplied by the slaves during the brink of the Industrial Revolution which gave these empires a huge economical boost.
