How did mexican independence encourage the westward expansion of american citizens? a) it allowed trade routes to develop in the southwest and opened up a previously closed lands to settlement by american citizens b) a strong spanish army had previously prevented american westward migration c) native americans ignored american settlers in order to focus on driving the newly formed nation from their lands d) the newly formed mexican government built an extensive network of trails and roads, allowing for easier migration by american citizens

the dust bowl, otherwise known as the dirty thirties, was a huge dust storm that killed multiple (and i mean  multiple) farmer's crops, leaving them homeless, and foodless, and jobless. in california, there were 5.7 million residents, and the population shrank as mexicans were repatriated. however, when the dustbowl happened, a lot of people began to move to california. by 1940, 250,000 people had arrived. therefore, your answer would be  the population increased, massively.  i hope this !

explanation:

the space race was a battle to make advanced technology to get to the moon and to get a better understanding of space.