When the estates general convened in may 1789 what actions did members of the third estate take and why?

the members of the Third Estate started the National Assembly.

Explanation:

To find a solution for the economic problems King of France called the meeting of Estate General to carry out a possible solution. The Estate General was comprised of three estates first two included clergy and nobility and the Third Estates included all who are not in the above two. But representation was such that each estate holds equal weight-age, was found unfair by Third Estate who comprised 98 percent of France population and they walked out to form National Assembly. It demanded that there was a need for a new government which protect all citizens.

aa dikha du tujhe mera wala dance

it was certainly a debatable decision, mainly because it was based primarily on political - and not on legal or social - views. since the congress at that time was led by members of the republican party, and the territory that the tribes wanted to turn into an exclusively indian state was predominantly democratic, the proposal (as expressed in the constitution) did not succeed, but the constitution itself proved to be of crucial importance in the creation of the state of oklahoma, and, most importantly, it guaranteed the involvement of representatives of the indian tribes in the government of the future joint state.  

as a member of congress, i would have voted to ratify the constitution, or at least to have it tabled. ignoring it was an interested and partial decision.