Leonardo da vinci made first sketches of submarines in the late 1400s in 1890s people built the first real submarine today countries spend billions of dollars on building submarines - paraphrase each sentence using the passive so that it means the same as the original sentence.( 6 points max.) ни черта если честно не знаю просто кто не тупой в
2)first real submarine was built in 1890s
3)billions of dollars are spent on submarines