The third amendment is known as a protection from intrusions or invasions. specifically the British had issues with their soldiers barging into homes and demanding hospitality and resources. This was known as the Quartering Act. The third amendment doesn’t allow soldiers to do this in America as a way to ensure privacy.
Answer:
They wanted Texas to remain independent and believed that Texas had the resources to develop as a great nation separate from the U.S.
The key waterways in the south during the civil war were: Mississippi,Ohio and Tennessee rivers
Both side aware that controlling these rivers would cut down oppositions food and weaponry supplies along with limiting the opposition's ability to mobilize. The union army managed to leverage on this situation better than the Confederates, leading to the union's victory during the civil war.
As it doubled the land area of the U.S., it also increased goods, services and wealth. Some advocates said that not only did the movement increase the size of the country, expanding to other countries and not just states, but it also added to farm lands needed to produce products and poultry.