Answer:
Caprock
Explanation:
Texas is divided into four regions. North central plains are a region of Texas which is largest region. There is a bed of rocks known as Caprock below the soil. Caprock prevents the flow of any water or oil from below and these does not reach the soil. These rocks are harder and more resistant type of rocks.
Competition between european countries such as portugal and spain affect overseas exploration and expansion, they didn´t want to go to America, they both wanted to go to Asia, and Africa, trade with asia, get their riches, improve technology and covert people to Christian. Christopher Columbus wanted to go to Asia when he found america, as a result of all that competition, spanish and portuguese established colonies in america.
