Why is it important for historians to corroborate information found in a source?

What was the government purpose for creating “day schools”

The ottoman kingdom began in the region of anatolia

What was the purpose of winston churchill’s “blood, toil, tears, and sweat” speech? a. to inform parliament about nazi aggression b. to inspire the british people to keep fighting the nazis c. to update parliament on what he had accomplished so far d. to convince parliament to go to war against nazi germany