What is the first and second continental congress? the first continental congress was in 1774 and the second continental congress was in 1778. why was there one and what cause them? explain clearly and don't use too many high standard words or else i'll get ! : d what is the first and second continental congress? the first continental congress was in 1774 and the second continental congress was in 1778. why was there one and what cause them? explain clearly and don't use too many high standard words or else i'll get ! : d follow 3 answers 3 report abuse are you sure you want to delete this answer? yes no