humboldt descubrió una relación entre los animales, plantas y clima que viven en un lugar ¿Cómo se llama esa relación?0 puntos

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.

i dont know the answer sorry but if i knew it i would of told you