HELP ME❣ Cho hệ các vecto

U={(1,2,4);(0,-1,-3);(2,3,5);(1,0 ,-2)}

a. Tìm số chiều và một cơ sở W của không gian con sinh bởi hệ vecto U

The writing is like bold so i can’t see it well

After the experience with great britain having a monarchy, the united states realized that everyone needed to have a voice in the government. the fact that americans had no voice was the main reason for the war. thus, they created a democracy, where the people voted for their representatives and the government ruled with the consent of the people.