Answer:
The correct order is:
I. Governor Martinez refused Moses Austin's plan
III. Baron de Bastrop helped Moses Austin
IV. Spanish government approved Moses Austin's plan
II. Moses Austin returned to Missouri
Explanation:
When in 1819 he initially presented the plan to the governor Martinez he was refused by him. Still, after that he presented his idea to Baron de Bastrop, who liked his idea of colonization. That is why he managed to present his case in front of the governor. This time governor agreed and Moses gain the approval of Spanish government. Still, he didn't live enough to fulfill his plan, as he died in Missouri in 1821.
I assume you mean what challenges after they gained independence. They had many internal conflicts. This included fighting about religion. There were also natural disasters. There was the problem of transitioning directly from a dictatorship to a democracy.
2nd Amendment- The right to bear arms which means every citizen in the US over 21 has the right to own a firearm.
While you didn't provide us with any concrete answers, this relationship is something related to an alliance, but in reality isn't one because the smaller country is only doing this because they're afraid of repercusions.