Plant usually germinate from seeds, when a seed is planted, a tree usually results. Thus, the sentence, 'Indirect rule sowed the seeds for class and ethnic tensions means that, indirect rule was the factor that bring about class and ethnic tension; it is the root cause and reason why class and ethnic tensions occurred. Indirect rule is the one that give birth to class and ethnic tension.<span />
The correct answer is that their processes were lengthy unlike many other colonies where a swift revolution ended it all. For example, Belize fought for its independence for over 20 years, and it ended with the UN asking for independence. Macau had 4 talks over 10 years regarding its transfer of sovereignty from the Portuguese government and it ended successfully.
Here are the events in chronological order:
Boomers tried to illegaly claim Unasigned Lands. [1879]
William Springer attached the Springer amendment to the Indian Appropiation Act. [February 1889]
The first land run began in Oklahoma. [April 1889]
Towns and town governments were established in Oklahoma Territory. [1890]
I believe the answer is: the U.S.S. Maine being blown up
U.S.S maine was one of the battleship which belonged to united states, which was attacked by the Spanish during Cuba's uprising against the Spanish government. This create a tension between united states and Spain which resulted in United States helping Cuba to obtain their independence.