D. The line between women's and men's work blurred as they helped each other do essential work.
The first computer or ENIAC (Electronic Numerical Integrator Analyzer and Computer) which the University of Pennsilvania built to do ballistics calculations for the U.S. and other early computers proved to many universities and corporations that these machines were useful because They could solve problems in 30 seconds that otherwise would have taken 12 hours by hand.
For this reason, most of the first computers in the United States were purchased by universities and corporations in spite of the space ,manpower and the tremendous investment of money, they demanded in this early stages.
President Ronald Reagan was president at the end of the Cold War.
The term that said US expansion was God's will is the Manifest Destiny
The group that made up the majority of California's population in 1840 was Native Americans.
And finally, the first American settlers into the Mexican territory known as Texas in 1821 were brought by Stephen F. Austin.