why did de Rubi choose to concentrate on protecting the land South of the Border line instead of trying to extend protection to the large amount of territory Spain controlled from Texas North to the Rocky Mountains

He didn't try to expand protection to the large amount of territory because Spain didn't have enough money or power to keep the northeastern presidios in Texas.

I don't actually know if this is right because my teacher doesn't actually check the questions, but this is what I understood from the lesson.

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.

the united states presidential election of 1992 was the 52nd quadrennial presidential election. it was held on tuesday, november 3, 1992. democratic governor bill clinton of arkansas defeated incumbent republican president george h. w. bush, independent businessman ross perot of texas, and a number of minor candidates.