How can i compare the challenges facing
farmers and workers around 1900 with their
challenges today?

In 1900's farmers did not have the technological advancement that we have today, nor did they have the machines that are developed now a days that make their jobs easier, quicker and more efficient.

Of course, their jobs are easier now that we have advanced technology. But we still cannot control the weather, therefore, our harvest is dependent upon the amount of rain and sun the crops receive. Also, finding good hands to help on the farm, who are reliable and knowledgable about the job is increasingly difficult 

Prince henry the navigator is the man you're looking for.