He contributed to a writing called On the Heavens
Since you provide no options, i assuming it would be : National spending
It's a total calculation of the amount of goods/services that being consumed by a nation within a specific period (usually calculated every year)
hope this helps
Answer:
That when there were American troops near their territory the Mexican troops shot at them since Mexico claimed that the Nueces River wascthe Northeastern border(US) while the US said that the Rio Grande was their border so war broke out
It’s number 1 - I took da test