Answer:
1) Whitney, 2) Crusaders, 3) Protestants, 4) Johannes Gutenberg, 5) Martin Luther, 6) James Watt, 7) James Hargreaves, 8) Jethro Wood, 9) Cyrus McCormick, 10) Oliver, 11) Elias Howe, 12) John Deere.
Explanation:
1) Eli Whitney developed the cotton gin in 1793.
2) The Crusaders fought to free Jerusalem in late 11th Century.
3) Protestants led the Reformation movement in the 16th Century.
4) Johaness Gutenberg invented the printing press in the decade of 1440.
5) Martin Luther protested practices of the Catholic Church in 1517.
6) James Watt invented the steam engine in 1777.
7) James Hargreaves invented the spinning jenny in 1764
8) Jethro Wood invented the iron plow in 1819.
9) Cyrus McCormick invented the reaping machine in 1831.
10) Oliver established a clothing factory.
11) Elias Howe invented the sewing machine in 1790.
12) John Deere invented the steel plow in 1837.
