One of galileo’s contributions to science was

the invention of the telescope

Explanation:  Galileo Galilei, he was a Italian astronomer, engineer, philosopher, physicist, and mathematician, closely related to the scientific revolution.

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:

it was a act of seld fesnse more over it was a peace treaty between the fogein contunries.