The collaboration between Hitler and Stalin, known as the Molotov-Ribbentrop Pact, was a strategic alliance between Nazi Germany and the Soviet Union signed in 1939. This non-aggression pact allowed both countries to divide Eastern Europe into spheres of influence, leading to the invasion and occupation of Poland. However, the collaboration was short-lived as Hitler eventually broke the pact and launched Operation Barbarossa, invading the Soviet Union in 1941. This marked the beginning of the conflict between the two countries during World War II. **

Without specific information about the PS4's status at the time of the download, it is difficult to determine whether it was turned off. If the PS4 was turned off while a download was in progress, the download would have been interrupted and would need to be restarted once the console is turned back on. It is generally recommended to keep the console powered on while a download is in progress to ensure that it completes successfully. **

The invention of video technology refers to the development of devices and systems that can capture, record, and display moving images and sound. This includes the invention of the video camera, video cassette recorder (VCR), and video display devices such as televisions and computer monitors. Video technology has revolutionized the way we communicate, entertain, and document events, and has become an integral part of modern life. It has also paved the way for the development of digital video technology, including digital cameras, streaming services, and high-definition displays. **

Vostok 1 was a spacecraft that carried the first human, Yuri Gagarin, into space. The technology of Vostok 1 included a spherical cabin for the cosmonaut, life support systems, and a reentry module for the return to Earth. The spacecraft was equipped with radio communication systems to maintain contact with ground control, as well as instruments for monitoring the cosmonaut's vital signs and the spacecraft's performance. Vostok 1 was launched using a powerful rocket, the Vostok-K, which propelled the spacecraft into orbit around the Earth. **

The second industrial revolution was a significant progress in many ways. It brought about advancements in technology, transportation, and communication, leading to increased efficiency and productivity. It also led to the development of new industries and the expansion of existing ones, creating job opportunities and economic growth. However, it also brought about social and environmental challenges, such as poor working conditions, pollution, and income inequality. Overall, the second industrial revolution was a mixed bag of progress and challenges. **

Modern technology, in contrast to today, was characterized by the emergence of personal computers, mobile phones, and the internet. These technologies revolutionized communication, information access, and productivity. However, they were not as advanced or integrated as the technologies we have today. Today, we have more powerful and interconnected devices, such as smartphones, smart home devices, and cloud computing, which have transformed nearly every aspect of our lives. **

No, the game progress of Cities Skylines was not deleted. The game progress is typically saved automatically as you play, so unless there was a specific issue with the game or your save file, your progress should still be intact. It's always a good idea to regularly save your game progress manually as well, just to be safe. **

I'm sorry, but I don't have access to specific information about individual game progress in Pokemon Go. If you are experiencing issues with your game progress being deleted, I recommend reaching out to the game's support team for assistance. They may be able to help you recover any lost progress or provide guidance on how to prevent it from happening in the future. **